旋转汞泵 rotary mercury pump

汞泵联轴器 mercury air pump coupling

汞扩散泵 mercury diffusion pump

汞喷射泵 mercury ejector pump

汞蒸汽喷射泵 mercuryjet pump ; mercury vapour jet pump ; mercury ejector pump ; mercury jet pump

汞汽泵 mercury vapour pump

汞真空泵 mercury vacuum pump

汞气泵 mercurial air-pump

汞喷射泵联轴器 mercury ejector pump coupling