- 空气: air; atmosphere
- 密: secret
- 性: nature; character; dispositi ...
- 真空气密性: vacuum tightness
- 气密性: air impermeability; air retention; air tightness; air-holding property; air-retaining property; air-tightne; gas proofness; gas tightness; gas-tightness; leak tightness; leakproofness; pressure tightness; pressuretightness; resistance to air loss; tightness
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