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1·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。

2·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。

3·Confirmation of supersymmetry would be a shot in the arm for M-theory and help physicists explain how each force at work in the universe arose from one super-force at the dawn of time.

如果能证实超对称性的确存在，那无异于为M理论注入了一针强心剂，物理学家们可以借此来解释宇宙诞生之初，各种作用力是如何从一种超级作用力里诞生的？

4·Confirmation of supersymmetry would be a shot in the arm for M-theory and help physicists explain how each forces at work in the universe arose from one super-force at the dawn of time.

如果能证实超对称性的确存在，那无异于为M理论注入了一针强心剂，物理学家们可以借此来解释宇宙诞生之初，各种作用力是如何从一种超级作用力里诞生的？

5·The Internet Engineering Task Force (IETF) is the protocol engineering and development arm of the Internet formally established by the IAB in 1986.

互联网工程工作小组（IETF）作为正式创立于1986年的IAB组织重要部门，致力于协议相关工程技术和开发工作。

6·He reached out his hand and they shook, Brendan managing through an extreme force of will to keep his arm steady.

他伸手和他握了握，布伦丹则用强烈的意志使劲不让手臂颤抖。

7·Partner: mineral water bottles. It can increase the use of force, better arm of thin arms.

搭档：矿泉水瓶。它能增加手臂使用的力量，更好的瘦手臂。

8·The lesson, says Susan Irving of the Government Accountability Office, a non-partisan arm of Congress, is that “no process change can force agreement where one does not exist.

联邦会计总署（一个不分党别的国会机构）的Susan Irving说，过去的教训是“没有任何进程变化能够推动一个本不存在的协议。”

9·If an arm is stretched forward under water resistance is increased and a reaction force back ward is developed both of which would contribute to negative acceleration.

如果手臂在水中是向前伸展则阻力会随之增加而向后方的反作用力也会出现，二者都会产生负加速度。

10·The simulation revealed that despite providing a mechanical disadvantage, the short lever arm of a sprinter's heel actually produced more force than the longer lever arm of a non-sprinter.

这个模拟实验显示：尽管这样的结构造成了力学上的缺陷，但事实上短跑运动员短足跟所提供的短力臂比非短跑运动员的长力臂能提供更大的力量。