闭式齿轮传动是机械传动中最重要的传动之一，形式很多，应用广泛，传递的功率可达数十万千瓦，圆周速度可达200m/s。
提出了按等强齿数确定闭式齿轮传动设计准则的新方法。
Study of determining method of number of gear teeth in shifting system of machine tools;
闭式行星轮系是一种多功能的行星齿轮传动机构。
Closed planetary gear system is a multifunctional mechanism of planetary gear transmission.
闭式软齿面齿轮传动设计中，常受齿面接触疲劳强度的限制。
Designs o? The closed soft surface gear transmissions are generally restricted by the contact fatigue strength.
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