柱形直齿轮
Cylindrical spur gear
以上为机器翻译结果，长、整句建议使用 人工翻译 。
矿山机械设备中大模数直齿圆柱形齿轮使用较多，当齿面磨损一定程度后就要报废，现介绍几种修整翻新复用技术。
Spur gears were used more in mine machinery equipment, they would be abandoned if wore out. Kinds of technology were introduced here.
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