The seal developed based upon the characteristic and requirement of refrigeration compressor in ship, but it is applied to the others in general use.
该密封是针对舰船用制冷压缩机的轴封特点和要求而设计的，但也可用于民用制冷机。
The process of naked cooling with nitrogen cycle refrigeration was proposed according to the producing requirement, followed by some points to note during the naked cooling process.
根据生产需要，提供了利用氮气循环制冷实现空分设备裸冷的工艺方法，分析了实施过程中的注意问题；
Sometimes refrigeration is needed in winter in the north areas because of the technological requirement.
由于工艺需要，有时北方冬季也需要供冷。
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