润滑油是一种技术密集型产品，是复杂的碳氢化合物的混合物，而其真正使用性能又是复杂的物理或化学变化过程的综合效应。润滑油的基本性能包括一般理化性能、特殊理化性能和模拟台架试验。
但低飞溅性的润滑油脂可能带来耐磨性、噪声、阻力矩等问题。
Low out particle greases, however, have problems with endurance wear resistance, noise, torque, etc.
在车辆运行或维护过程中也会带来闸瓦的残渣，沙砾或者润滑油脂。
Brake shoe residue, sand and lubricants are often introduced by operating or maintenance processes.
为了不使他的汽车停驶，他只好把润滑油脂拿到黑市出卖，然后再买进汽油。
He only kept his vehicles rolling by selling lubricants and grease on the black market and buying gasoline.
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