空运转 meaning in Chinese

free run
idle operation
idle running
idling
no load running
running without load

C strictly forbid to turn emptily
3严禁空运转
Make the sewing machine run idle for approximately 30 seconds after adjusting with the adjust pin , insert a sheet of paper for confirming the oil amount ( oil spots ) from the direction of arrow mark , and confirm that the amount of oil is adequate
用油量调节销调整后，请进行30秒左右的空运转，按照箭头方向插入确认油量(油迹)专用纸确认油量是否适量。
On the bases of carrying out idle operation , cutting and modal experiment of certain numerical controlled lathe , it is determined that weak dynamic stiffness in the spindle component of machine tool is the reason in the respect of structure for causing cutting vibration of machine tools
摘要在对某型数控车床进行空运转、切削及模态试验的基础上，确定了机床主轴部件动刚度薄弱是引起机床切削的结构颤振方面的原因。