济宁一特工程机械有限公司是一家专业经营美国卡特彼勒，日本小松挖掘机零部件的经销、批发商。

Jining a te engineering machinery Co., LTD is a specialized management American caterpillar, Japan komatsu excavator parts distribution, wholesaler.

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分析了小松pc - 6型挖掘机的油泵变量系统，给出了LS阀和PC阀的参数调整方法。

This paper analyzed the variable pump system of Komatus PC-6 excavator. The method for testing and adjusting of LS valve and PC valve was introduced.

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