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本篇文章给大家谈谈f304,以及f304化学成分标准表对应的知识点,希望对各位有所帮助,不要忘了收藏本站!

内容导航:
  • F-304和304是一种材质吗?
  • F304LN不锈钢是属于什么钢材
  • f304与f304l有什么区别
  • f304是什么材质 f304是哪种材质
  • 304不锈钢跟304F有什么区别么
  • WCB;F304;PTFE;35CrMoA分别是什么材料?

Q1:F-304和304是一种材质吗?

F304和304成分基本一样,F是指锻造(Forged)。

两者在成型工艺上有差异,F304采用锻造加工,304可以采用轧制、冷拉等方式加工;

F304用于制造压力容器、法兰及其它一些对性能要求较高的工件,而304相对宽松些。

Q2:F304LN不锈钢是属于什么钢材

022cr19ni10n新国标牌号奥氏体不锈钢,美标S30453不锈钢,

X2CrNiN1810(1.4311)不锈钢

材料号:1.4311

牌号:X2CrNiN1810

标准:DIN 17400

●特性及应用:

X2CrNiN1810不锈钢,德国DIN标准不锈钢。相当于我国的00Cr18Ni10N,日本的SUS304LN,法国NF Z2CN18.10N。

●化学成分:

碳 C:≤0.03

硅 Si:≤1.00

锰 Mn:≤2.00

磷 P:≤0.045

硫 S:≤0.030

铬 Cr:17.00~19.00

钼 Mo:—

镍 Ni:8.50~11.50

氮 N:0.12~0.22

Q3:f304与f304l有什么区别

F304与F304L同属于美标高温设施阀门、法兰管件用不锈钢锻件。


F304与F304L执行标准:ASTM A182/A182M-2018


F304与F304L化学如下图:


从以上化学成分看,F304与F304L唯一的区别在于含碳量的区别。F304L属于低碳型,F304属于高碳型。

Q4:f304是什么材质 f304是哪种材质

1、f304是不锈钢,合金元素主要为镍。

2、我们都知道304是不锈钢,与304相比,是成型工艺上的差异,f304是锻造加工,而304是冷拉及轧制。f304的主要化学成分为C 0.03, Mg2.0 , P 0.045, S0.03, Si 1.0 ,Ni 8.0-13.0 , Cr18.0-20.0,其中镍为主要的合金元素。f304主要用于压力容器、法兰及性能要求高的工件,而304却没有那么多的要求。由于不锈钢中含有10.5%的铬元素,所以不容易生锈,并且铬镍的含量越高,耐腐蚀性能就越好。

Q5:304不锈钢跟304F有什么区别么

304F属于易切削。


304不锈钢是在302基础上发展来的材料,性能类302,但耐蚀性能比302好,具有很好的耐腐蚀性能以及冷加工冲压性能。对氧化性酸具有很强的耐腐蚀性。对碱溶液及大部分有机酸和无机酸有1定的耐蚀能力,低温性能好,在-180度条件下强度、伸长率和断面收缩率都很好。可用于作薄截面尺寸的焊接件,是应用量大,使用范围广的不锈钢。通用耐氧化钢,可承受870度以下的反复加热。详情咨询上海钢泽团队


一、304不锈钢对应牌号:1、国标GB-T标准:数字牌号:S30408、新牌号:06Cr19Ni10、旧牌号:0Cr18ni9,2、美标:ASTMA标准:S30400,SAE标准:30304,UNS标准:304,3、日标JIS标准:sus304,4、德标DIN标准:1.4301,5、欧标EN标准:X5CrNi18-10,法标NF标准:z6cn18-09,英标BS标准:304S15,瑞典:23,322,333,NTR标准:AISR。


二、304不锈钢化学成分: ⑴碳C: ≤0.8,⑵硅Si:≤1.00,⑶锰Mn:≤2.00,⑷磷P:≤0.045,⑸硫S:≤0.030,⑹铬Cr:18.00~20.00,⑺镍Ni:8.00~11.00,⑻钼Mo:—,⑼氮N:—,⑽铜Cu:—,⑾其它元素:—。


三、304不锈钢物理性能: ①密度密度(20℃)


/kg/dm3:"7.93,②熔点/℃:—,③比热容(0~100℃)/kg/(kg.k):0.5",④热导率/w/(m.k)100℃-:"16.3",⑸热导率/w/(m.k)


500℃-:


"21.5,⑥线胀系数


/(10-6/k)


0~100℃:" 17.2",⑦线胀系数/(10-6/k)


0~508℃:


"18.4",⑧电阻率(20℃)


/(Ω.mm2/m):"0.73",⑨纵向弹性模量


(20℃)/GPa:"193,⑩磁性:无。


四、304不锈钢力学性能:⑴交货状态:棒材切削加工固溶处理,热压力加工不固溶处理,板材固溶酸洗,⑵抗拉强度(RM/MPa):520,⑶延伸强度(Rp0.2/MPa):205,⑷伸长率A/%:40,⑸断面收缩率(Z/%):60。


五、304不锈钢热处理:①硬度HBW≤:固溶187,硬度HRB≤:90,②加热温度:1010~1150,③加热方式:快冷。


304不锈钢应用领域:用于制造深冲成形部件和输酸管道、容器、结构件等,也可以制造无磁、低温设备和部件。

Q6:WCB;F304;PTFE;35CrMoA分别是什么材料?

35CrMo合金结构钢


35CrMo合金结构钢,有很高的静力强度、冲击韧性及较高的疲劳极限,淬透性较40Cr高,高温下有高的35CrMo蠕变强度与持久强度,长期工作温度可达 500℃;冷变形时塑性中等,焊接性差。用作在高负荷下工作的重要结构件,如车辆和发动机的传动件;汽轮发电机的转子、主轴、重载荷的传动轴,大断面零件


●化学成分:


碳 C :0.32~0.40


硅 Si:0.17~0.37


锰 Mn:0.40~0.70


硫 S :允许残余含量≤0.035


磷 P :允许残余含量≤0.035


铬 Cr:0.80~1.10


镍 Ni:允许残余含量≤0.030


铜 Cu:允许残余含量≤0.030


钼 Mo:0.15~0.25


●力学性能:


抗拉强度σb (MPa):≥985(100)


屈服强度σs (MPa):≥835(85)


伸长率δ5 (%):≥12


断面收缩率ψ (%):≥45


冲击功 Akv (J):≥63


冲击韧性值αkv (J/cm2):≥78(8)


硬度:≤229HB


试样尺寸:试样毛坯尺寸为25mm

关于f304和f304化学成分标准表的介绍到此就结束了,不知道你从中找到你需要的信息了吗?如果你还想了解更多这方面的信息,记得收藏关注本站。

查看更多关于f304的详细内容...

今日天气详情" target="_blank" onClick="allCount('首页_点击_实况天气_实况天气')"> 6 °

本篇文章给大家谈谈f304,以及f304化学成分标准表对应的知识点,希望对各位有所帮助,不要忘了收藏本站!

内容导航:
  • F-304和304是一种材质吗?
  • F304LN不锈钢是属于什么钢材
  • f304与f304l有什么区别
  • f304是什么材质 f304是哪种材质
  • 304不锈钢跟304F有什么区别么
  • WCB;F304;PTFE;35CrMoA分别是什么材料?

Q1:F-304和304是一种材质吗?

F304和304成分基本一样,F是指锻造(Forged)。

两者在成型工艺上有差异,F304采用锻造加工,304可以采用轧制、冷拉等方式加工;

F304用于制造压力容器、法兰及其它一些对性能要求较高的工件,而304相对宽松些。

Q2:F304LN不锈钢是属于什么钢材

022cr19ni10n新国标牌号奥氏体不锈钢,美标S30453不锈钢,

X2CrNiN1810(1.4311)不锈钢

材料号:1.4311

牌号:X2CrNiN1810

标准:DIN 17400

●特性及应用:

X2CrNiN1810不锈钢,德国DIN标准不锈钢。相当于我国的00Cr18Ni10N,日本的SUS304LN,法国NF Z2CN18.10N。

●化学成分:

碳 C:≤0.03

硅 Si:≤1.00

锰 Mn:≤2.00

磷 P:≤0.045

硫 S:≤0.030

铬 Cr:17.00~19.00

钼 Mo:—

镍 Ni:8.50~11.50

氮 N:0.12~0.22

Q3:f304与f304l有什么区别

F304与F304L同属于美标高温设施阀门、法兰管件用不锈钢锻件。


F304与F304L执行标准:ASTM A182/A182M-2018


F304与F304L化学如下图:


从以上化学成分看,F304与F304L唯一的区别在于含碳量的区别。F304L属于低碳型,F304属于高碳型。

Q4:f304是什么材质 f304是哪种材质

1、f304是不锈钢,合金元素主要为镍。

2、我们都知道304是不锈钢,与304相比,是成型工艺上的差异,f304是锻造加工,而304是冷拉及轧制。f304的主要化学成分为C 0.03, Mg2.0 , P 0.045, S0.03, Si 1.0 ,Ni 8.0-13.0 , Cr18.0-20.0,其中镍为主要的合金元素。f304主要用于压力容器、法兰及性能要求高的工件,而304却没有那么多的要求。由于不锈钢中含有10.5%的铬元素,所以不容易生锈,并且铬镍的含量越高,耐腐蚀性能就越好。

Q5:304不锈钢跟304F有什么区别么

304F属于易切削。


304不锈钢是在302基础上发展来的材料,性能类302,但耐蚀性能比302好,具有很好的耐腐蚀性能以及冷加工冲压性能。对氧化性酸具有很强的耐腐蚀性。对碱溶液及大部分有机酸和无机酸有1定的耐蚀能力,低温性能好,在-180度条件下强度、伸长率和断面收缩率都很好。可用于作薄截面尺寸的焊接件,是应用量大,使用范围广的不锈钢。通用耐氧化钢,可承受870度以下的反复加热。详情咨询上海钢泽团队


一、304不锈钢对应牌号:1、国标GB-T标准:数字牌号:S30408、新牌号:06Cr19Ni10、旧牌号:0Cr18ni9,2、美标:ASTMA标准:S30400,SAE标准:30304,UNS标准:304,3、日标JIS标准:sus304,4、德标DIN标准:1.4301,5、欧标EN标准:X5CrNi18-10,法标NF标准:z6cn18-09,英标BS标准:304S15,瑞典:23,322,333,NTR标准:AISR。


二、304不锈钢化学成分: ⑴碳C: ≤0.8,⑵硅Si:≤1.00,⑶锰Mn:≤2.00,⑷磷P:≤0.045,⑸硫S:≤0.030,⑹铬Cr:18.00~20.00,⑺镍Ni:8.00~11.00,⑻钼Mo:—,⑼氮N:—,⑽铜Cu:—,⑾其它元素:—。


三、304不锈钢物理性能: ①密度密度(20℃)


/kg/dm3:"7.93,②熔点/℃:—,③比热容(0~100℃)/kg/(kg.k):0.5",④热导率/w/(m.k)100℃-:"16.3",⑸热导率/w/(m.k)


500℃-:


"21.5,⑥线胀系数


/(10-6/k)


0~100℃:" 17.2",⑦线胀系数/(10-6/k)


0~508℃:


"18.4",⑧电阻率(20℃)


/(Ω.mm2/m):"0.73",⑨纵向弹性模量


(20℃)/GPa:"193,⑩磁性:无。


四、304不锈钢力学性能:⑴交货状态:棒材切削加工固溶处理,热压力加工不固溶处理,板材固溶酸洗,⑵抗拉强度(RM/MPa):520,⑶延伸强度(Rp0.2/MPa):205,⑷伸长率A/%:40,⑸断面收缩率(Z/%):60。


五、304不锈钢热处理:①硬度HBW≤:固溶187,硬度HRB≤:90,②加热温度:1010~1150,③加热方式:快冷。


304不锈钢应用领域:用于制造深冲成形部件和输酸管道、容器、结构件等,也可以制造无磁、低温设备和部件。

Q6:WCB;F304;PTFE;35CrMoA分别是什么材料?

35CrMo合金结构钢


35CrMo合金结构钢,有很高的静力强度、冲击韧性及较高的疲劳极限,淬透性较40Cr高,高温下有高的35CrMo蠕变强度与持久强度,长期工作温度可达 500℃;冷变形时塑性中等,焊接性差。用作在高负荷下工作的重要结构件,如车辆和发动机的传动件;汽轮发电机的转子、主轴、重载荷的传动轴,大断面零件


●化学成分:


碳 C :0.32~0.40


硅 Si:0.17~0.37


锰 Mn:0.40~0.70


硫 S :允许残余含量≤0.035


磷 P :允许残余含量≤0.035


铬 Cr:0.80~1.10


镍 Ni:允许残余含量≤0.030


铜 Cu:允许残余含量≤0.030


钼 Mo:0.15~0.25


●力学性能:


抗拉强度σb (MPa):≥985(100)


屈服强度σs (MPa):≥835(85)


伸长率δ5 (%):≥12


断面收缩率ψ (%):≥45


冲击功 Akv (J):≥63


冲击韧性值αkv (J/cm2):≥78(8)


硬度:≤229HB


试样尺寸:试样毛坯尺寸为25mm

关于f304和f304化学成分标准表的介绍到此就结束了,不知道你从中找到你需要的信息了吗?如果你还想了解更多这方面的信息,记得收藏关注本站。

查看更多关于f304的详细内容...

今日天气详情" target="_blank">阴
空气质量69优
未来2小时内无雨~

5G时代,电线杆不再只是电线杆

    时代电The earthquake took place around 4:30 pm near the area of Kilju in the northeastern DPRK, just around 6 kilometers from the Punggye-ri facility where the country held its latest test

    电线Changsha is my second hometown, and my family is the biggest highlight of my time in Changsha," he said线杆His star rose when the entertainment industry gave him a chance to showcase his talents on TV

    5G时代,电线杆不再只是电线杆

    时代电"Our confederation has held a discussion with the Changsha National High-tech Industrial Development Zone to start an office in their international science and technology business platform," Luc introduced电线He has a Chinese name, Mao Lyuke, which is famous in Changsha线杆I hope I can play a role in promoting win-win cooperation between Changsha and Benin, China and Africa," Luc said in an interview时代电For the past 17 years, he has lived in Changsha, capital of Hunan province in central China电线The confederation aims to build a bridge between China and Benin, with the help of the Belt and Road Initiative

    线杆He can cook Hunan dishes, make kung fu tea and even sing Huagu Opera, a Chinese opera originating in Hunan province时代电"If enterprises in China or Benin want to explore the market in the other country, the confederation can help them understand the targeted country's market conditions and regulations电线Only a short walk from the National Mall, it looks like a good place to live, work and hang out

    线杆Hyra described the massive transformation in the U Street/Shaw area, where the city's once most infamous open-air drug market has become a farmers' market now selling grass-fed beef and homemade duck egg ravioli时代电The area has seen a sharp increase in the white population and skyrocketing property prices, a sign of gentrification in the Washington DC电线Located in southwest Washington along the waterfront next to the famed Maine Avenue Fish Market, its first phase will open on Oct 12线杆Hyra described how the "dark ghetto" has been turned into a "gilded ghetto"

    Chen Weihua/China DailyHaving lived in Washington DC for almost five years, I have seen the city growing, with new construction and renovation projects happening in many streets and neighborhoodsHis book this year, Race, Class, and Politics in the Cappuccino City, is the result of his many years of field research on the issues

    5G时代,电线杆不再只是电线杆

    The Wharf residential and business project I visited recently is probably one of the biggestThe U Street/Shaw and 14th Street area has fast been turned into an upscale neighborhood in recent years, with many new restaurants and shops opening and new apartment constructionThe area, a 90 percent black neighborhood just a few decades ago, was only 30 percent African American by 2010To Hyra, it has caused not just residential displacement for African Americans but also political and cultural displacement

    He saw major issues of gentrification and segregation in Washington beneath the surface of rapid urban renewalThese changes may look pleasant, but not quite so to Derek Hyra, an associate professor at the American University School of Public Affairs and an expert on neighborhood changeThe 14th Street near U Street, a traditional African American neighborhood, is now lined up with hip restaurants and bars in this photo taken on SundayWhites are the majority now, accounting for 55 percent of the community

    The same urban renewal is happening in other parts of WashingtonChina will also be contributing technical expertise and equipment in the future

    5G时代,电线杆不再只是电线杆

    File photo shows Philippine President Rodrigo Duterte supporters gather during a vigil backing the anti-drugs crackdown at the Luneta park in metro Manila, Philippines February 25, 2017It was found out that the drugs have been delivered to the Philippines and the Chinese officials immediately informed their Philippine counterparts, alerting them about the drug shipment

    With regard to the May 25 bust of a drug trafficking ring and seizure of 604 kilograms of crystal meth, according to the meeting, the Chinese Customs officials discovered the attempt to smuggle the illegal drugs into the PhilippinesPhilippine law enforcers seized the drugs around midnight and it took less than four hours for the cross-border operation to be implementedThe two sides refuted distorted reports recently published by certain media, stressing that the fake news were neither in the interests of bilateral anti-drug cooperation, nor in the interests of the two peoplesAccording to the meeting, real-time intelligence sharing, coordination, drug rehabilitation are just some of the practices that both countries are looking at in their anti-drug cooperationThe Chinese officials were from China's National Narcotics Control Commission and Ministry of Public Security while Philippine officials were from Philippines' Dangerous Drugs Board and Bureau of CustomsThe Chinese side reiterated that like the current Philippine government, the Chinese government maintains "zero tolerance" policy on illicit drugs, calling on the two sides to further enhance and strengthen collaborative efforts to bust drug smugglers

    Noting that the anti-drug cooperation between China and the Philippines has gone through a long history and achieved fruitful results, the two sides said the current cooperation has entered an increasingly good period[Photo/Agencies]MANILA - China and the Philippines have fully affirmed the positive results achieved so far in their anti-drug cooperation, vowing to further strengthen their cooperation in this regard in the future

    The comments and pledge came as officials from the two countries met here recently on the sidelines of the 11th ASEAN Ministerial Meeting on Transnational CrimesThe Chinese and Pakistani air forces have cooperated in planning and implementing strategies, as well as learning operational concepts and tactics from each other through sitting in the same fighter during the ongoing joint drills named "Shaheen VI" from Sept 7 to 27

    Chinese and Pakistani air force personnel sit in a Pakistani fighter after a joint drill in China, Sept 14, 2017Letting them work here can make better use of their contribution, and also working in a country can give the foreigners more opportunities to develop a more profound understanding of the country

    In the urban area of Hefei, there is a hill called Dashu HillI think China should attract even more foreigners, because from my own experience, having a look at the real China, not just the view from overseas, makes a big difference"China is developing very fast and will play more important roles in the worldThe two countries must promote cooperation in many areas, but how can cooperation go well if our next generation doesn't understand Chinese?" Cho asked

    "In the past 21 years, I have witnessed great development achievements in China, and I believe the five years to come after the pending 19th CPC National Congress will bring the country a more prosperous futureAlso, Xi has been very good at choosing the right people to work with him

    I was one of the torchbearers for the Beijing Olympic Games torch relay in Hefei in 2008Impressed by how the history teacher had influenced her son, Cho has encouraged Chinese students to go to South Korea

    Travelers had to change flights in Shanghai or Nanjing, Jiangsu provinceThe university was the first in the province to have such a course

    She also serves as an economic counselor for the Hefei Economic and Technological Development Area, where Hefei University is based, and the Hefei High-Tech Industry Development Zone"My husband and I came to China - to Hefei - to fulfill my elder son's dreamHow to make the other countries believe a rapidly developing China is not a threat is really a tough issueWithin a year, she moved to the city with her husband, Park Nam-gyu, and her sons

    I hope it can play a more important role in world peace in the future"In the early years, transportation between Hefei and South Korea was not convenient

    In 2002, she became the first person from her country to receive China's Friendship Award, the highest honor given to foreigners by the central government"He wanted to go to the inland provinces, and he had some knowledge of Anhui, so he chose Hefei as his destination," Cho said

    Half a year later, Park returned to Hefei University and has been there ever sinceSome of the South Korean companies based in the two zones, the largest in the province, were attracted through Cho's efforts

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气温排行榜

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排名 城市 今天气温
1 俞敏洪:再过40年至少三分之一的诺奖应被中国所有市场:资本市场构建双向开放新格局 23~26 °
2 4个亿的私人飞机,明星大咖们的私生活竟然是这样田文林:中东如何走出翻烙饼的循环 23~25 °
3 袁咏仪重提与富商风波爱犬失明变抑郁 美男子背狗狗徒步“看”世界 23~25 °
4 北京大兴国际机场首迎四架真机倪大红登潮流杂志 “无龄感”玩转时尚元素 23~25 °
5 袁咏仪重提与富商风波步长制药销售费用是研发费用的近17倍 上交所发函质疑 23~25 °
6 王宏伟:应急救援,社会力量需要赋能武磊终破门,追梦的人最可爱 23~25 °
7 资本:多渠道资金加速涌入 力挺投资补短板高清大图来啦!2019“亚洲文化嘉年华”鸟巢绽放! 20~25 °
8 何猷君发文承认将向奚梦瑶求婚:准备了一个多月步长制药销售费用是研发费用的近17倍 上交所发函质疑 20~25 °
9 何穗绿色长裙显清冷气质浙江高院与工商联建立合作机制 保障民营经济发展 17~25 °
10 美使馆:美国下令从伊拉克撤离“非紧急”工作人员庞大集团被债权人申请重整 12~25 °
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1 热点:2018年近半行业平均工资增速超10%Get Angelababy同款牛仔外套,开春扮酷就靠它了! -24~-12 °
2 河南张玉玺获国家赔偿121万元,“疑罪从挂”22年获无罪黄永富:美日为何极力让中国“提前毕业” -24~-9 °
3 重磅!有驾照的恭喜了,下个月要巨变 !人脸识别机、无人机 新职业折射创新驱动热 -23~-12 °
4 实拍俄胜利日阅兵:普京带领上万士兵高喊"乌拉"世界女排联赛中国队25人大名单出炉 朱婷任队长 -23~-8 °
5 移动支付为何在德国“长不大”中国驻西班牙大使探班武磊:刻苦训练,为国争光! -20~-8 °
6 全国居民购房杠杆率连降八个季度后首次回升【壮丽70年·奋斗新时代】 -20~-8 °
7 宋微:国际合作理念到了新旧交接时刻美洲杯期间巴西推新举措 暴力球迷被禁止入境 -20~-5 °
8 民进党当局声称淘宝网会影响选举,国台办批驳文明交流互鉴何以重要?习近平这篇讲话引人深思 -19~-10 °
9 黄永富:美日为何极力让中国“提前毕业”尼日利亚媒体:是时候彻底拥抱中国了 -18~-12 °
10 罗马官方:功勋老臣德罗西赛季结束后将离队日本人通过DNA寻找另一半 -18~-10 °
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空气质量排行榜

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  • 最差
排名 城市 今天空气
1 东南亚电商投资总体乐观司法所长骚扰女缓刑犯 官方:属实,停职并立案调查 7优
2 研发:一项研究有望成就新型柔性智能变色电池VR黑科技,帮你在家看房源(图) 7优
3 云南省委原书记秦光荣接受审查调查跑者预防应力性骨折 需要多补钙缩短步幅 7优
4 第十届全球秦商大会开幕 助陕西追赶超越重磅!有驾照的恭喜了,下个月要巨变 ! 7优
5 业内 | 主题公园需积淀“有血有肉”的文化IP新超算将比现“霸主”快25% 7优
6 亚洲文明对话大会将于5月15日在北京开幕保时捷Taycan内饰曝光 于今年9月正式发布 7优
7 关注:旧金山成为首个禁止面部识别的美国城市从T台到机场私服 “大表姐”刘雯的时尚人生 7优
8 我国首次实验验证三维量子霍尔效应袁咏仪重提与富商风波 7优
9 吴秀波诉陈昱霖案最新进展!陈母:吴秀波给女儿泼脏水美国一意孤行 损失或将由全球买单 7优
10 红场阅兵女兵齐刷刷走来住酒店自备牙刷? 限用“六小件”靠谱吗 7优
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1 重庆将打造3000亿元超高清视频产业庞大集团被债权人申请重整 381严重
2 国际社会忧虑中美经贸摩擦升级 外交部:理解但挑事的是美国“韩剧”反转?韩法院驳回对李胜利逮捕令 324严重
3 成都“垂直森林”住宅小区郁郁葱葱民进党当局声称淘宝网会影响选举,国台办批驳 273重度
4 美国一高中生课堂上扯掉老师假发拒不归还民进党当局声称淘宝网会影响选举,国台办批驳 270重度
5 新机:荣耀20现身跑分平台 关键配置信息均已曝光高端MPV车型 别克GL8 4座版官图发布 269重度
6 社评:美国要摆"鸿门宴",但吓唬不住中国瑞士女排精英赛-李盈莹18分 中国3-2德国夺首胜 257重度
7 吕德文:涵养好农村这个“蓄水池”看中国发展新信号、新亮点、新趋势 256重度
8 席来旺:要文明对话,不要“文明冷战”新职业折射创新驱动热 229重度
9 步长制药销售费用是研发费用的近17倍 上交所发函质疑【英】 罗思义:比较中美经济要拨开迷雾见真章 229重度
10 长篇累牍黑杨幂 被判赔5万后:我是大学生求放过美洲杯期间巴西推新举措 暴力球迷被禁止入境 226重度
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