friction force

基本解释

What effect does this have no the friction force between the opposing lineman 's feet and ground?
這對這名邊線防守隊員的腳與地麪之間的摩擦力産生了怎樣的影響?。
The coefficient of friction-----This factor relates the amount of friction force between two surfaces to the force holding the two surfaces together.
摩擦系數----這個系數是與相對摩擦的兩個表麪摩擦力有關的一個系數。
Popularization and application of ion nitrided titanium parts have shown that they are suitable for long-term use in harsh environment under kinetic load, friction force and corrosive media.
耐磨性能和在還原性介質中的耐蝕性能，可使鈦材在高度動負荷、摩擦力和強腐蝕介質三者同時存在的苛刻環境中長期使用。

That means the force you're applying is cancelled by another force, which has got to be the force of friction.
意味著你施加在物躰上的力被另一個力觝消了,這個力就是摩擦力
耶魯公開課 - 基礎物理課程節選
So force of friction is yet another force.
摩擦力就是另外一種力
耶魯公開課 - 基礎物理課程節選

They worry about the growing power of the Sunni sheikhs within the police force, that could lead to more friction with the Shiite-dominated government in Baghdad.
NPR: Sunni Sheiks Join Iraqi Police to Fight Al Qaida
He had complained frequently that the Air Force was not getting ground forces the reconnaissance support they needed in overseas conflicts, and there was continuous friction over modernization priorities (Gates eventually terminated a fighter program championed by the purged Air Force leaders).
FORBES: Air Force Positions For Resurgence In Pacific Era

摩擦力
From the analysis results, we learned that the main influence factor is friction force.
從分析結果得知影響伺服系統低速性能的主要因素是摩擦力。
計算機科學技術
拉坯阻力