常見(jiàn)例句雙語(yǔ)例句In general a sealing technology involving welding in combination with expand jointing is used for connecting a pipe column to a tube plate in a tubulature type heat ex- changer.列管式換熱器的換熱管束與管板連接一般均采用焊接加脹接的密封固定工藝。 返回 column connecting pipe