This paper comprehensively stated source of air pollution and damage to human body health, introduce the research status from domestic and abroad, put forward the reckon method of economic losses.
针对空气污染的来源和对人体健康的危害作了详尽的阐述，介绍了国内外研究现状，提出了空气污染经济损失估算的方法。
Oil-free Air Compressor can provide stable&oil-free air source, to avoid oil gong into human body.
全无油空气压缩机能提供稳定的无油气源，避免油污进入人体，又能避免终端机器的非耐油管因有油而引发故障。
Ground source heat pump system can also set heating, air conditioning and refrigeration and provide living hot water in a body.
地源热泵系统还可以集采暖、空调制冷和提供生活热水于一身。
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