This paper analyzes gear damage cases on the basis of basic regularities, attempting to find out gear failure reason and put forward countermeasures.

并且齿轮失效常发生在齿轮部分，因此运用基本规律对具体齿轮的损伤作用具体分析，查明失效原因并且提出相应对策。

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And put forward about the processing method and the processing device of the involute arc gear is developed. Analyzing the processing methods, the ideal involute arc gear could be processed out.

还提出了渐开线弧齿圆柱齿轮的加工方法，并研制了其加工装置，对其加工方法进行分析研究，使其可以加工出理想的渐开线弧齿圆柱齿轮。

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The company overhauled many of Conroe's wells, and put in new fluid-handling gear--important considering that what was coming out of the ground averaged just 2% oil to 98% water.

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