All test equipments lie between these two extremes. 所有的試驗裝置都處在兩個(gè)極端情況之間。
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。
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