1. Friction can stop things from moving. 摩擦力能够阻止物体移动。
2. Finally, the precise ball cup shape provides smooth suspension action with a minimum of friction and play. 最后，精确的球杯形状提供流畅的暂停行动，以最低限度的摩擦和发挥。
3. On the sintering friction material, heat fatigue cracks were not found in steel back coat of Ni or coat of Ni followed . 烧结摩擦材料，无论是采用镀镍还是镀铜再镀镍的钢背都没有在镀层处发现热疲劳裂纹。
英英解释
n.
1. a state of conflict between persons
2. the resistance encountered when one body is moved in contact with another
3. effort expended in moving one object over another with pressure
