micrometer spark

例句：

1. 1. The micrometer was used to measure the length of the wire.
   用微米刻度测量了导线的长度。
2. 2. The engineer used a micrometer to adjust the screws on the machine.
   工程师用微米计量器调整机器上的螺丝。
3. 3. The micrometer was used to check the accuracy of the measurements.
   用微米计量器检查了测量的准确性。