在高精密仪器仪表中，用于传动装置的大多都是传动平稳的小模数齿轮。
The transmission gears used in high precise apparatuses and instruments are mostly fine-pitch gears that can drive stably.
文章分析了伺服系统中精密齿轮传动装置总传动比、传动误差、传动回差对整个系统的精度影响，提出传动装置各级精度分配时应注意的问题。
In this paper, the accuracy influences of general gear ratio, transmission error and driving backlash on servo system were analyzed, and some measures of gear ratio distribution were presented.
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