冲量，动量的改变；火箭方程；随机运动的压力作用点。
Impulse and momentum change; rocket equation; origin of pressure from random motion.
扭矩以推力与曲柄偏心距或旋转轴心至推力作用点的距离相乘计算。
Torque is calculated by multiplying the push by the crank offset, or the distance of the push from the rotating shaft.
岩钉钢环制造商对重力作用点一直未作研究，重力作用点取决于未知的公差范围。
The point of actuation by gravity has not been investigated by the karabiner manufacturers and is subject to an unknown tolerance range.
本文通过对支托间隙斜度的数理分析，讨论了支托间隙斜度与支托力作用点的关系。
This Paper describes the relationship be-force functional point of the occlusal rest by tween the occlusal rest space slope and the analysis of the mathematic.
这些理论虽然给出的土压力数值较为准确，但是给出的土压力作用点及分布却与实测结果相差较大。
Though the value of earth pressure can be given exactly by these theories, the application location and distribution of earth pressure obtained have a large difference from the measured results.
要求我们时时刻刻保持机头的姿态，同时在接地的过程中使用小油门，让飞机的重力作用点从机翼转移到主轮。
So we need to keep the nose attitude all the time and need some power during touch down to transfer the weight of the airplane from the wings to the main gear.
一般认为锚杆（索）抗滑桩在锚杆（索）拉力、滑坡推力、桩前滑体抗力的作用下绕锚固点（锚拉力作用点）保持力矩平衡，锚固点为一铰支点。
It is a balance system that the anti-slide pile is exerted by three kinds of force, they are the tensile force of anchor, the thrust of sliding mass, the resistance of soil and rock.
因此，非常有必要对经典土压力理论进行一定的改进，给出合理的土压力分布和简单实用的合力作用点确定方法，并研究其对挡土墙和锚杆稳定性的影响。
Therefore, it is very necessary to improve traditional theories of earth pressure in order to provide the method determining the application location and distribution of earth pressure reasonably.
因此，非常有必要对经典土压力理论进行一定的改进，给出合理的土压力分布和简单实用的合力作用点确定方法，并研究其对挡土墙和锚杆稳定性的影响。
Therefore, it is very necessary to improve traditional theories of earth pressure in order to provide the method determining the application location and distribution of earth pressure reasonably.
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