要有很高的油膜强度和良好的润滑性能。
Must have the very high oil film strength and the good lubricity.
无论在高或低的操作温度，以及在高负荷时，都能提供合适的油膜和优良润滑性。
Maintains the best oil film and excellent lubrication whenever at low or high operation temperature and under high loads.
在高负荷时，也能提供合适的油膜和优良的润滑性。
At high load, but also can provide a suitable oil film and excellent lubricity.
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