双语例句
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We currently offer five main product lines of valve guide, rocker arm, precombustion chamber, valve seat insert and rocker shaft.
我公司现有产品包括气门导管、气门摇臂和预燃烧室、气门座、摇臂轴总成各大系列品种。
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This paper reports the development and the application detail of cobalt-free, lead-free and environmentally friendly exhaust valve seat insert.
这篇论文详细报道了无钴、无铅及有利于环境的排气阀座圈的开发与使用。
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