求翻译：油罐车保养和油罐车修理是密切相关的。修理中有保养，保养中有修理。在车辆保养过程中可能发现某一部位或机件将要发生故障或损坏的前兆，因而可利用保养时机，对其进行修理。而在修理的过程中，对一些没有损坏的机件也要进行保养，这是很自然的事情。是什么意思？

Tank wagons and tank repair maintenance is closely related. Repair and maintenance, maintenance repairs. In vehicle maintenance procedures may be found in a precursor of parts or mechanical failure or corruption will occur, and which can use maintenance time, to repair it. While in the repair process, no damage to some parts had to be maintained, it is quite natural thing.