位移是表示物体位置的变化,是由始位置引向末位置的有向线段。位移是矢量,与路径无关。而路程是标量,是物体运动轨迹的实际长度,与路径有关。 速度的物理学定义是表示质点运动的快慢和方向,它的方向就是位移变化的方向。其大小称之为速率。 质点是一种理想化的模型。如果一个物体自身的大小和形状对于研究它的运动没有影响或者影响很小,我们就可以用一个有质量的点来代替整个物体,那么这个用来代替整个物体的并与物体具有相同质量的点就叫质点。 可以参考中学物理课本。
跨断层测量的复测周期主要由观测精度和断层位移速度决定,二者合理匹配的周期就是最佳周期。
A repeated period of measurement across the fault is mainly determined by observation accuracy and rate of deformation. It is the best period for they to match reasonably.
并采用各点点位位移速度图对所建立的函数模型进行验证,同时对状态方程的建立及初始值的选取进行分析总结。
Finally, it validated established model with each point displacement velocity chart, analyzed and summarized the established of state equation and selection of initial value at the same time.
针对盒形件拉深成形时法兰变形区的变形进行了材料塑性流动的理论分析,提出了位移速度差诱发剪应力的观点。
In of displacement induces shear stress. Shear deformation this paper, flow law of material is theoretically analysed based on deformation of the flange deformed area in box drawing.
He found that some droplets had a certain velocity, and then others had a velocity plus some step.
他发现了一些液滴存在某个速度,还有其他的液滴有速度和位移。
If I gave you the location of a particle as a function of time, you can find the velocity by taking derivatives.
如果我给出物体的位移是时间的函数,你可以通过求导来得到速度
And he couldn't get values of velocity in between certain steps.
他得不出两个点之间,位移的速度。
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