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The concentrate delivery system employs a positive displacement pump.
浓缩物递送系统采用正位移泵。
youdao
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In this paper, a new type positive displacement compressor is advanced.
提出一种新结构形式的变容压缩器。
youdao
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In this paper, a new type positive displacement compressor is advanced.
提出一种新结构形式的变容压缩器。
youdao