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某些汽车上除装有低油压表外,还装有低油压警告灯。当润滑系统的油压降到允许低限数值时,低油压警告灯亮。
In addition to some cars equipped with low pressure gauge, but also equipped with low oil pressure warning lights. When the oil pressure of the lubrication system drops to the allowable low limit value, the low oil pressure warning light is on.