锥形气门弹簧
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conical spiral valve spring 锥形螺旋阀簧
conical valve spring
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Because the water pressure in spring assembly and valve body makes the conical compression core and seat seal automatically, the flow channel of valve is closed.
因弹簧总成和阀体中水流压力将锥形压芯和锥形压座自动压合密封，阀体水流通道关闭。
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