经分析和试验，改变了传统铸钢齿轮铸造工艺方法，平均工艺出品率达到75%以上，取得明显的经济效益。
According to analyzing and testing, the overall yield is up to above 75 percent by changing traditional foundry process about gear of steel casting. The benefit is obvious.
齿轮和齿轮托可以是铸铁或铸钢，可以有铸造或机加工的齿轮齿，取决于负载和应用环境。
The gears and gear brackets may be either cast iron or cast steel and may have cast or cut teeth, depending on the loads and the application.
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