intermediate gear meaning in Chinese

第二速度齿轮
中间齿轮
中间的齿轮
中速齿轮，二档齿轮

Transmission of rotary motions ; types of connection to gears , intermediate gears , flexible drive shafts and equipment
旋转运动的传动装置.第1部分:连接齿轮中间齿轮挠
And this driving type results in the disadvantages of metro project such as the high cost of construction and maintenance , the big noise of vibration . the linear metro , which is droved by linear induction motor ( lim ) , needn ’ t intermediate gearing and is droved to advance directly by the electromagnetic thrust between primary and secondary of lim . its force of traction is no longer restricted with the track adherence and the wheel only plays the support and guidance role
电磁气隙是直线感应电动机的一个重要参数,气隙的变化会直接影响到电磁推力、初级电流等电机特性,而推力和电流对地铁的稳定运行起着至关重要的作用,所以对地铁中直线感应电动机的性能及气隙变化对电机性能的影响进行分析研究具有非常重要的意义。