ratchet device造句
造句与例句
手机版
- Operating on the principle of the ratchet device, a gearwheel and a stiff board is mounted on a handle, which rotates freely.
- A holding capstan is a ratchet device that can turn only in one direction; once a load is pulled into place in that direction, it can be held with a much smaller force.
- His design placed a ratchet device in the hub of the front wheel ( the driven wheel on the'velocipede'designs of the time ), which allowed the rider to propel himself forward without pedaling constantly.
- It's difficult to see ratchet device in a sentence. 用ratchet device造句挺难的
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