常見(jiàn)例句雙語(yǔ)例句This steam trap has a simple structure, mainly consisting of float balls and automatic emptying devices.該疏水閥的結(jié)構(gòu)比較簡(jiǎn)單，主要由浮球和自動(dòng)排空裝置組成。 返回 automatic steam trap trap