...[arm of force] 杠杆的受力点和支点之间的距离 [ability falling short of one's wishes;ability not equal to one's ambition;lack the ability to do what one would like to...
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moment arm of force [力] 力臂
maximum arm of force 最大力臂
arm of force coefficient 内力臂长度系数
coefficient of rolling force arm 轧制力臂系数
arm of normal force 法向力臂
The effect of tension on arm of force was studied that: forward tension can enhance the arm of force.
连轧过程张力是最主要的因素，研究了张力对力臂的影响规律：前张力使力臂增加。
In medieval times, a lance couched under the rider's arm, unifying the force of rider and weapon, would throw its wielder backwards off the horse at impact.
在中世纪，一把长矛被放在骑手的臂膀下，以统一骑手和武器的力量，一旦受到冲击，持兵器者就会向后摔下马去。
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