number of revolutions

• 旋转次数,转数

number of revolutions的用法和样例：

例句

1. The rotation number of the machine is on the increase.
   机器的转数在增加。
2. A vortex cage located in the vortex counts the revolutions of the vortex pool.
   放置在涡流中的涡流笼圈计数出涡流源的转数。