Definition of friction摩擦的定義 Friction is a physical characteristic that exists between two distinct bodies in contact with each other that would resist a force with potential to produce movement of the bodies relative to the other.摩擦是相互聯系的兩個不同的機構，會抗拒的力量與可能產生的機構相對于其他運動之間存在的物理特性。
