screw-down stop check valve的意思|示意
美 / /
英 / /
旋下截止止回阀
screw-down stop check valve的网络常见释义
截止止回阀 截止止回安全阀 screw-down stoop check and safety valve 截止止回阀 screw-down stop check valve 截止止回节流阀 screw-down stop check and throttle valve ..