Flange connecting shape shall be square. 法兰连接孔分布需正方形。
The breech lock closure structure and the large flange connection structure of high pressure heat exchangers have been compared. 就高压换热器中螺纹锁紧环结构及大法兰连接结构作了比较。
The second crack is a crack originating at the groove weld toe of the column flange-girder flange connection. 第二种是产生于立柱翼缘与主梁翼缘连接处的坡口焊缝焊趾处的裂纹。