The drag force acts in the opposite direction to the path of the ball.
阻力方向与球的运行方向相反。
When the pilot's control force acts only to deflect the tab, and not the main surface, it is designated a servo tab.
当驾驶员的操纵力仅使调整片偏转而不作用于主操纵面时，称为伺服调整片。
The drift move of field has generality: Any eddy field may have a drift move of field in the nature when the external force acts.
场的漂移运动可以作一般性推广：自然界中在外力作用下任意涡旋场可以产生场的漂移运动。
An object remain at rest or moves in a straight line unless a force ACTS upon it.
一个物体如无外力作用，它将继续保持静止或作直线运动。
In the riser system of offshore platform, the wave force ACTS frequently on the riser.
海上采油平台的垂直立管频繁受到波浪力的作用。
The force and the area over which the force ACTS can be used to calculate the stress produced in the material.
力和力作用的面积可以用来计算出材料内部产生的压力。
Its inverse force analysis is to find all equilibrium configurations when an external force ACTS on its moving platform.
其力逆解即给定作用于上平台上某点的外力，求系统处于静力平衡时的所有构形。
A body at rest remains at rest, and a body in motion moves with uniform speed in a straight line, unless a force ACTS on it.
如无外力作用，静止的物体始终静止，运动的物体一直作匀速直线运动。
A homogeneous isotropic thin plate, on which the surface force ACTS and there are many actuators of discrete distribution, is considered.
考虑一均匀各向同性薄板结构，在板面内受面力作用，且在板的上下表面离散分布着压电执行元件。
When a turnout is connected with CWR through welded joints, the longitudinal rail temperature force ACTS directly on the frog and the switch section along with the variation of rail temperature.
道岔与无缝线路焊接后，随着轨温的变化，长钢轨纵向温度力将直接作用于道岔的撤叉和转撤部分。
When a turnout is connected with CWR through welded joints, the longitudinal rail temperature force ACTS directly on the frog and the switch section along with the variation of rail temperature.
道岔与无缝线路焊接后，随着轨温的变化，长钢轨纵向温度力将直接作用于道岔的撤叉和转撤部分。
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