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含气层 hánqìcéng
hydroel.st. aeration zone; unsaturated zone; vadose zone
oil gas-bearing bed; gas-bearing horizon
soil. zone of aeration
含气层建造 hánqìcéng
eng.geol. gas bearing formation
含气层: 28 phrases in 5 subjects
Drilling7
Geology1
Geophysics1
Oil / petroleum8
Technology11