如果Web服务器看到此请求中的标头，它可能会压缩响应使用客户端按列出的方法之一。

If the web server sees this header in the request, it may compress the response using one of the methods listed by the client.

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气体在标况下的压缩系数；

ZN: Air compression coefficient in standard condition;

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组织编制设备规格书、数据表和请购书，负责转动设备和成撬设备的评标工作，如：压缩机、泵、发电机组等；

Prepare Specification, Mechanical data sheet, Material Requisition, Technical Bid Evaluation for rotating equipment and packaged equipment, such as compressor, pump, emergency diesel generator.

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