Petroleum and natural gas industries - Rotary-type positive displacement compressors - Part 1: process compressors (oil-free).

石油和天然气工业。旋转型容积式压缩机。第1部分：加工压缩机（无油）

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In practice, general text compressors are used either for archiving purposes or for reducing the network bandwidth during the data exchange process.

实际上，一般这类压缩器用于归档目的，或在数据交换过程中减少网络带宽。

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Reciprocating compressors can produce the work a lot of heat, so in working circulation cooling process between need to set.

往复式压缩机工作时会产生大量的热，因此在工作循环之间需要设定冷却过程。

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