We start the term by studying a servomotor mechanism.我们从研究伺服马达装置来开始这个学期的学习。
When the device detects acceleration, it sends a signal to a small electric servomotor that rotates a sleeve on the axle to shift the planetary gears.当仪器侦测到轮子加速，就会将讯号传送到一个小型的电子伺服马达，马达会带动轮轴上的套筒，然后变换行星齿轮的位置。
