micro-friction 微小摩擦力
friction reduction by micro-bubble 微气泡减阻
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An optical testing method of micro-friction and its principle was introduced to characterize the friction properties of material surface under microcosmic conditions.
为了测试微观条件下材料表面的摩擦学性能，给出了一种微摩擦力的光学测试方法。
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