ratchet feed mechanism

例句：

1. 1. The new machineuses a ratchet feed mechanism to ensure accurate feeding.
   这台新机器使用棘轮进给机制来确保精确喂食。
2. 2.The engineer had to replace the old ratchet feed mechanism with a more efficient one.
   工程师不得不用一个更高效的棘轮进给机制来替换旧的。
3. 3.The construction of this mechanism requires precise measurements and adjustments.
   这个机构的构建需要精确的测量和调整。