求翻译:焊接法兰水表带旁通管及止回阀直是什么意思?待解决 悬赏分:1 - 离问题结束还有 焊接法兰水表带旁通管及止回阀直问题补充:匿名 2013-05-23 12:21:38 Welded flange water meter with a bypass pipe and valve straight 匿名 2013-05-23 12:23:18 welding flange water meter with a bypass pipe...