外型尺寸等于或小于原单缸压缩机。
The size of the contour equals or is smaller than the previous single-cylinder compressor.
本实用新型在原设计的单缸压缩机 基础上改进的，它仍保持原有的工作原理及特性，结构紧凑。
The utility model improves on the basis of the previous design of single-cylinder compressor and still preserves the previous operation principle and property and the compact structure.
传统的旋转式压缩机多为单缸型，后来出现两缸的压缩机。
The traditional rotary compressor for more than single-cylinder type, and later a two-cylinder compressor.
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