远折端受重力作用的重力性尺倾是产生肘内翻的主要原因。
The gravitational ulnar inclination due to the effect of the gravity in distal end is the main cause of cubitus varus.
挟沙水流中的泥沙颗粒因水流紊动而悬浮,同时受重力作用而下沉。
Sediment particles is suspended in the sediment-laden flow because of the flow turbulence, and settle down due to gravity action.
剩余油的数量、分布情况受油层沉积韵律类型、重力作用、毛管力作用、油层渗透率、水驱强度等多种因素的制约。
The quantity and distribution of remaining oil are dominated by the type of deposit rhythm, gravity and capillarity force, permeability and water flooding degree.
If all you know is the particle is falling under the affect of gravity, that's not enough to say where the particle is, right?
如果你只知道,质点受重力作用下落,那并不足以表明物体的位移,对吧
So,the point is,every object falling under gravity is given by the same formula, but there are many, many objects that can have many histories, all falling under gravity, and what's different from one object and the other object is, when was it dropped, from what height, and with what initial speed.
关键是,每一个受重力作用下落的物体,都有同样的表达式,但是各个受重力作用下落的物体,都有不同的初始条件,所以它们的区别在于,下落时刻,下落高度和初始速度
For example, suppose you use vertical motion and you use y instead of x; and a would be g or -g; that's a particle falling down under the affect of gravity.
例如,假设在竖直运动中,你用 y 来代替 x,那么 a 就是 g 或者 -g,这就是一个受重力作用下落的质点
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