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.

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。

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Precisely cast ductile iron gear has advantages of low noise, high abrasion resistance index and long service life.

精密铸造球铁齿轮，噪音低，耐磨度高，使用寿命长。

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D. Gear box: 200 Involute cylinder Bevel wheel, cast alloy steel piston.

齿轮箱：200渐开线圆柱斜齿轮，铸造合金钢活塞。

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As low budget films go, they needed someone to handle props for the 2nd unit Ariel team so, I spent many weeks dressing up pilots and other extra cast members in WWII flight gear for the aerial shots in the movie.

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