chain drives的用法和樣例：
例句
- The chain factories with ling history in the world have their own chain transmission power rating raph and powertable.
世界各國歷史悠久的鏈條工廠都制訂有自己的鏈傳動功率曲線和率表。 - The structure and principle of reciprocating positioning chain are introduced, and the meshing process is analyzed also.
摘要介紹循環定位鏈傳動的結構及工作原理，並分析嚙合過程。
