top flange

基本解释

BP began trying Saturday afternoon to remove the bolted top flange that only partially completed the seal with the old cap.
英国石油公司在星期六下午开始尝试拆除用来固定旧防漏帽的法兰，这种旧的防漏帽不能充分实现堵漏功能。
The top flange of an extension stem, plug shaft diameter, and distance across flats on plug shaft are the same size as the valve selected.
订购时，请指明阀门尺寸、规格型号，以及从阀门法兰到延长件法兰顶部的准确距离（用户指定的长度如右图所示）。
This paper researches the plane stiffness of new composite structure for slab on the lower flange, which is compared with the traditional structure for the slab on the top flange.
本文研究了将楼板置于钢梁下翼缘的新型组合结构平面刚度，并和传统的将楼板置于钢梁上翼缘的结构形式的平面刚度和极限承载力作了比较。