The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
物体的加速度与所受的合外力成正比,与物体的质量成反比。加速度的方向与合力的方向相同。
In the era of globalization, Chinese agricultural enterprises must dare to go global and showcase Chinese quality on the international stage.
力量!废话!我们变成这样那样,全在于我们自己。我们的身体就像一座园圃,我们的意志是这园圃里的园丁。