Screw the nut with the sleeve spanner. 用尺寸相應的套筒扳手旋緊螺母。
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. 當儀器偵測到輪子加速,就會將訊號傳送到一個小型的電子伺服馬達,馬達會帶動輪軸上的套筒,然後變換行星齒輪的位置。