拧下机油箱上的放油塞，并排放机油。
Undo the oil drain plug on the oil container and drain off the oil.
拧松螺钉，并将多余机油排放到机油收集箱中。
Loosen screw and drain off excess oil into an oil collection container.
机油消耗率不仅直接关系到内燃机的经济性、动力性和可靠性，而且与内燃机颗粒排放之间有着密切的联系。
The oil consumption not only affects economy, dynamics and reliability of IC engine, but also relates to the particulate emission of IC engine.
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