chain-drive section

例句：

1. 1.The engine's chain drive section is responsible for transmitting power from the transmission to the wheels.
   发动机的链驱动部分负责将动力从变速器传递到车轮。
2. 2.The engineer carefully inspected the chain drive section of the machine before installing it.
   工程师在安装机器之前仔细检查了机器的链驱动部分。
3. 3. The new design incorporates a more efficient chain drive section that reduces wear and tear on the gears.
   新设计采用了更高效的链驱动部分，减少了齿轮的磨损。