Over 10 days later, he felt that the louse was becoming bigger. After 3 years, it looked as big as a carriagewheel.
过了十多天，他觉得虱子渐渐地大了起来，三年后，看起来竟像车轮那样大了。
2
If the carriage is provided with a small head, the grinding wheel correction effect is better.
若能在拖板上装一小型动力头，采用砂轮磨削修正则效果更佳。
3
Through the drive axle housing , the tractive force, braking force and lateral force act on the wheel transfer to the suspension system, frame or carriage.