临界pv值
在正常的边界润滑中,当载荷p或速度v加大到某一数值,摩擦副的温度突然升高,摩擦系数和磨损量急剧增大。边界膜强度达到极限值时相应的pv值称为临界pv值。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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