- component of rotation
- 分: component
- 分转站: drop repeater
- 每分转: u/min rpm
- 转动: 转动turn; run; twirl; roll; revolve; rotate 没有动力, 机器就不能转动。 you can't make a machine work without power supply. 那轮子现在转动得很灵活。 the wheel turns freely now.
- 每分转数每分转数: rpm
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