翻译：润滑系统的主要作用是使润滑油在所有运动部件的表面循环流动以减少摩擦。 A.
The main function ofthe lubrication system is to circulate and deliver oil to the surfaces of all the moving parts in orderto reduce friction. B.
The lubrication system is fed by the oil pan that forms the lower enclosure of the engine. C.
The main components of lubrication system are oil pump, oil filters, main oil galleries, oil pan, oil pressure regulators, relief valve and oil coolers. D.
The lubrication system is used for collecting, cleaning, cooling and re-circulating oil in the engine.
The main function ofthe lubrication system is to circulate and deliver oil to the surfaces of all the moving parts in orderto reduce friction. B.
The lubrication system is fed by the oil pan that forms the lower enclosure of the engine. C.
The main components of lubrication system are oil pump, oil filters, main oil galleries, oil pan, oil pressure regulators, relief valve and oil coolers. D.
The lubrication system is used for collecting, cleaning, cooling and re-circulating oil in the engine.