turns per inch

例句：

1. 1. The car has a maximum speed of 60 miles per hour.
   这辆车的最高时速为每小时60英里。
2. 2. The machine can turn the screw with a turns per inch of 360 degrees.
   这台机器可以以每英寸360度的转数旋转螺丝。
3. 3.The engineer used a turns per inch tool to measure the thickness of the wall.
   工程师使用每英寸转数的工具来测量墙壁的厚度。