天然气变频恒压供气系统具有变频涡旋压缩机的特点和优点，完全满足设计要求。

Equipressure natural gas supply system with frequency conversion possesses the feature and advantages of the scroll compressor with frequency conversion and satisfies the design requirements.

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介绍了空调系统中的压缩机几种能量调节技术：多级控制系统、变频技术和数码涡旋技术。

This paper introduces three kinds of energy modifying technology, multi-control system, frequency conversion technology and digital scroll technology.

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