single-acting air compressor

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1.	单动式空气压缩机 1 2 3 4 5 ... 单纱^ single yarn 单动式空气压缩机^ single-acting air compressor 单作用式空气泵^ single-acting air pump ... www.swmfanyi.com
2.	单作用式空压机按活塞往复一次气缸吸气的次数分为“单作用式空压机(single-acting air compressor)”和“双作用式空压机(double-acting air compr… baike.baidu.com