典型测试 表明一种产品特性的试验结果,通常是对该产品的多个生产批次进行化验分析所得到的平均值。 Viscosity Measure Of the resistance to flow,or intemal friction,Of a fluid.Viscosity changes with temporature so the temperature at which the measuremem was made must always be specked. 运动粘度 表明一种流体抵抗流动或者说是内部摩擦的能力的度量值。运动粘度会随温度变化而变化,因此,在给出运动粘度的数值时,通常必须注明其测试温度。 viscosity index(VI) An arbitary scale used to show the relative magnitude Of viscosity changes with temperature.Higher VI oils have less change in viscosity with temperature. 粘度指数(VI) 表明粘度随温度变化相对程度的经验量值.粘度指数越高的油品,其粘度随温度的变化量就越小. Worked Penetration The penetration of a sample of lubricating grease immediately after it has been brought to 25℃and Worked 60strokes in the ASTM grease Worker. 工作锥入度 在ASTM润滑脂工作机上,润滑脂样品在温度达到25℃并工作60冲次后立即测得的锥入度,即为工作锥入度
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