precompression chamber
... Precompression zone 预压区 precompression chamber 预压室 axial precompression 轴向预紧力 ...
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涡轮增压预燃室 precombustion chamber turbo charged
预压空气室虽在国内外生产的植保机械用隔膜泵上已普遍应用，但对该类空气室的性能研究未引起重视。
Pre-pressure air chamber has been widely adopted to the diaphragm pump sprayers manufactured both at home and abroad, but little attention has been focused on research of their performances.
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