短語詞組短語condensation trap drain valve 冷凝水分離器排水閥Automatic Trap Primer Valve 地板落水頭補(bǔ)水器STEAM TRAP VALVE 疏水閥;濾汽閥Automatic steam trap valve 蒸汽疏水閥Import trap valve 進(jìn)口疏水閥suspended spherical trap valve 浮球式疏水閥trap valve amplifier 陷波電子管放大器porcelain trap valve 陶瓷過濾閥Imported Automatic steam trap valve 進(jìn)口蒸汽疏水閥 返回 trap valve