... 简支梁 simply supported beam 经济跨度 economic span 经济配筋率economic ratio of reinforcement ...
基于42个网页-相关网页
... 计算跨径 computed span ; calculated span 经济跨径 economic span 标准跨径 standard span ...
基于30个网页-相关网页
economic life-span 经济寿命
economic life span 经济寿命
economic equipment life-span 设备经济寿命
·2,447,543篇论文数据,部分数据来源于NoteExpress
We have now had a truly ominous streak of chip warnings that span the spectrum of economic activity.
FORBES: Chip Stocks Still Not Pricing a True Inventory Correction
Alan Green-span has had a voracious appetite for economic statistics, but no one thing or collection of things has consistently guided him.
FORBES: When Will We Get the Answers?
These attitudes span all ages, ethnic groups and economic groups, but non-voters are particularly prevalent among the young, poor and minorities, studies show.
CNN: NHPrimary.com: Non-voters will stay in the shadows
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