tuning servomechanism

例句：

1. 1.The engineer needs to tune the machine before it starts working.
   工程师需要在机器开始工作之前调整它。
2. 2. The car's engine is out of tune, so we need to tune it back to its original setting.
   这辆车的引擎不协调，所以我们需要把它调回原厂设置。
3. 3.The scientist tuned the instrument carefully to ensure accurate readings.
   科学家仔细调校了仪器，以确保准确的读数。