useful cross section 中文意思是什麼
useful cross section
解釋
有效斷面-
As quantity, distance and size of cross - section of shaped steel have great influences on load - carrying of whole composite slabs, the author presented design principles and methods, which are useful for future cross - section design of composite slabs with shaped steel, steel sheet and concrete
對組合板中型鋼梁設置的數量、間距和截面尺寸對組合板承載力的影響進行了研究,提出設計原則和方法,為型鋼和壓型鋼板與混凝土組合板的截面設計提供依據。
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