单词	复陷盆地
释义	复陷盆地duplex basin
随便看	helium index helium ionization detector helium lamp helium leak detection mass spectrometer helium leak detector helium leak test helium leak-test helium liquefaction helium liquefier helium magnetometer helium mass spectrographic method helium mass spectrometer leak detector helium mass spectrometric leak detector helium material/device helium neon laser helium-neon laser helium neon laser｛=he-ne laser｝ helium neon system helium nucleus helium-oxygen diving helium-oxygen mixture helium permeation helium permeation test helium photoionization detector helium-poor star