Marina三块钱
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卖mattress啦~ Queen Simmons McGraw Beautyrest Classic Plush bought a year ago.Still have the original tag on. Very nice and comfortable. comes with box spring and steel frame. Bought with $600. Ask for $300. Price negotiable if picked up on 28th@SocialChicago 展开全文原微博 Marina三块钱
抗震规范GB50011-2010,10.2.节,在地震设防烈度7度或以下,矢跨比小于1/5的单向平面桁架可不进行沿桁架的水平向以及竖向地震作用计算。请问矢跨比小于1/5的大跨桁架为什么可以不考虑竖向地震作用哇?@魏利金---sunlay三磊 @结构工程师-王雷 @缪六华 @耐心是一种美德hzj @石子努力爬上山 @小梁结构 展开全文原微博