And when I say that the curl measures the rotation in a motion, well, that depends on which coordinates you use.
而旋度度量了,运动中的旋转情况,这跟坐标系的选择有关。
They were asked to perform ten different movements, including moving the wrist in a circular motion and moving their elbows.
VOA: special.2009.03.10
But luckily for us, there's a classical equation of motion that will, in fact, describe how the electron and nucleus change position or change their radius as a function of time.
但幸运的是,有一个,经典方程描述了电子和核子,位置或者它们直接的距离是,如何随时间变化的。
That is to say, the text is there to express desire, to put in motion, and to make manifest desire or a desire.
也就是说,文本就是用来表现内心真正的欲望,用一种动态的方式来展现愿望的。
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