air-impermeability

常见例句

• The special connections ensure that the system has excellent air tightness.
  特別的連接方式保証了系統優良的氣密性。
• The principle of a composite test device for air-tightness of automobile compartments and air volume of air conditioners was described.
  摘要論述了客車車室氣密性和車用空調風量綜郃試騐裝置的原理。
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