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air cavity
agric. 气腔 (acuna aerea, cavitas aereus)
el. 空气腔
hydroel.st. 气穴; 气孔; 空泡; 空穴
tech. 气腔; 气泡; 气眼
air-cavity
chem. 空泡; 空气穴; 气腔
air -cavity: 8 phrases in 4 subjects
Architecture1
Compressors2
Nautical1
Technology4