与传统手动机械式变速器相比，自动变速器无论是在结构原理，还是在使用维修上，都有其自身的特点和独特的规律。
Compared with the traditional mechanical transmission, the automatic transmission has its own features and particular rules both on the structural principle and the use and service.
绞车，起货机一种装有卷筒的固定的电动机驱动或手动的吊升机械，卷筒周围缠绕着与提升的重物相连的绳索。
A stationary motor-driven or hand-powered hoisting machine having a drum around which is wound a rope or chain attached to the load being lifted.
绞车，起货机一种装有卷筒的固定的电动机驱动或手动的吊升机械，卷筒周围缠绕着与提升的重物相连的绳索。
A stationary motor-driven or hand-powered hoisting machine having a drum around which is wound a rope or chain attached to the load being lifted.
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