up to now, it has universally been thought that provided the input torque of the driving gear of the involute gearing keeps constant, its supports do not vibrate.
在齿轮传动领域内,至今依然普遍认为,只要主动齿轮的输入扭矩保持恒定,渐开线齿轮支座就不会产生振动。
even if the input torque of an involute gearing keeps constant, the output torque of its driven gear surely fluctuates to a certain extent due to the existence of the sliding friction between teeth.