基本解釋[物理學]對頭式焊接閥英漢例句雙語例句Unless otherwise specified, all Pacific valves will be supplied with butt weld ends conforming to ANSI B16.25 either Fig. 2(b) or 3(b) depending on the nominal pipe wall thickness of the valve wall.除非另外指定,所有美國太平洋閥門都配置符合ANSI B16.25標準的對焊連接端口,并根據閥門壁厚和管道壁厚確定是屬于型號2(b)或3(b)。butt weld valve更多例句詞組短語短語butt weld ball valve 對焊球閥butt weld valve更多詞組專業(yè)釋義物理學對頭式焊接閥