求翻译：接手此车后，根据该车的故障现象，认为导致该车变速器产生故障的原因主要在3方面：①电控系统。②阀体。根据该款变速器的油路图可知，前进挡供油路线为：油泵－离合器控制阀－安全阀－手动阀－前进挡离合器；倒挡离合器供油路线为：油泵－离合器控制阀－安全阀－手动阀－倒挡离合器。将2条供油路线相比较，故障原因可能是手动阀或离合器存在泄漏。③机械故障。很有可能是离合器烧损。是什么意思？

To take over this car, the car fault phenomena that lead to the cause of the failure of the car transmission, mainly in three aspects: ① electronic control system. ② body. Subsection transmission oil line diagram shows forward gear oil route as follows: pump - clutch control valve - safety valve - m

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