帮我理理!? mock-up 本人觉得应译成 试件 the metallographic examination of the first mock-up shall be performed on the central tube assembly previously longitudinally sectioned following 4 perpendicular directions starting from the second weld pass stop as follows. 第一块试件的金相检测应在中心管安装前,从第二条焊缝开始沿四个垂直方向切割,至以下条件停止。查看更多