tightness test的用法和樣例：
例句
- The special connections ensure that the system has excellent air tightness.
特別的連接方式保證了系統優(yōu)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(chē)車(chē)室氣密性和車(chē)用空調風(fēng)量綜合試驗裝置的原理。
