求翻译：发动机工作时，必须保持正常油压。如果油压过低，各摩擦表面会因得不到足够的润滑而磨损加快；如果油压过高，容易使油封、油管压坏，消耗发动机动力。是什么意思？

Engine must maintain normal oil pressure. If oil pressure is too low, the friction surface due to insufficient lubrication and wear accelerated; If oil pressure is too high, easy to seal, tubing crushed, consume engine power.

Engine work, it is necessary to maintain normal hydraulic. If hydraulic too low, the friction surface will be due to insufficient lubrication and hydraulic excessive wear, accelerate; if it is easy for the oil seals, oil pipeline broken engine power consumption.

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When the engine work, normal oil pressure must be maintained. If the oil pressure is too low, the friction surface due to lack of sufficient lubrication and wear to accelerate if the oil pressure is too high, it may be easier oil sealing, tubing crush, consumption of engine power.

Engines work, must remain normal oil pressure. If the oil pressure is too low, the friction surface due to lack of sufficient lubrication and wear to accelerate if the oil pressure is too high, it may be easier oil sealing, tubing crush, consumption of engine power.