• 1. air replacement: 空气置换
• 2. fresh air replacement technology: 置换新风技术
• 3. fresh air replacement system: 置换新风系统

更多释义

• 1.The results showed that at higher evaporation rate the air replacement time can be reduced.
  结果显示对已设计好的无空气干燥机，干燥速率提高，空气置换时间明显缩短；
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• 2.Boeing will deliver the replacement wing sets to Hill Air Force Base, Utah, in four parts: three wing sections and an installation kit.
  波音将把置换机翼部件交付到犹他州希尔空军基地，部件分为四部分：三个机翼剖面和一个装置零配件。
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• 3.Another even higher profile project that the Air Force is working on is the long running and problem plagued replacement for the aerial tankers in use.
  空军另外一个高调的工作计划是——更换现役的长时飞行、毛病不断的空中加油机。
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