本文设计了真空伏辊实验模拟装置，并在其基础上通过实验研究，提出降低真空伏辊空气动力性噪声的方法。
We design the laboratorial device of vacuum couch roll and base on the experimental research, we put forward some solution to reduce aerodynamical noise of vacuum couch roll.
本实用新型进入真空泵的空气温度降低，对真空泵的影响减小，减少了真空泵的故障及维修工作量。
The temperature of air entering the vacuum pump is reduced, thereby having little influence for the vacuum pump and reducing the failure and maintenance workload of the vacuum pump.
全玻璃真空太阳集热管内外玻璃管夹层间真空度的保持情况对有效降低热损、提高太阳能的利用率、延长集热管的寿命都有至关重要的作用。
The vacuum degree between the inner and cover glass tubes plays a very important role in heat loss and the life time of all-glass evacuated collector tube.
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