... drain transfer 疏水汇集箱 drain transfer pump疏水回收泵 drain trap 疏水罐，疏水箱，疏水器，排水器，放泄弯管，排水防气瓣 ...
双语例句
1
This heat-transfer medium (Freon) absorbs heat from a low grade source (that is environment: air, river, drain, etc), steams off and goes into air pump 14.