conservative force
假设一个粒子从某位置
常用释义
英式发音
美式发音
基本释义
- 保守力：指一个受到某作用力的粒子，从初始位置移动到终结位置，而此作用力所做的功跟移动路径无关。等价地说，假设一个粒子从某位置，移动经过一条闭合路径后，又回到原本位置，则作用于这粒子的保守力所做的机械功（保守力对于整个闭合路径的积分）等于零。在一个物理系统里，所有的作用力都是保守力，则称此物理系统为“保守系统”，又称为“守恒系统”。重力是一种保守力，而摩擦力是一种非保守力。
例句
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1·Mechanical energy is conserved, because gravity is a conservative force.机械能是守恒的，因为重力是守恒力。
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2·It should make no difference because gravity is a conservative force.这没有区别,因为重力恒定。
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3·And mechanical energy is only conserved if the force is a conservative force.机械能只有在，力是恒定时才恒定。
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4·The conservative force and the gradient of the potential energy are dual vectors.保守力与势能梯度互为对偶矢量。
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5·Besides, it is pointed out that Japan's conservative force then had no enough power to change the elementary attitude.日本当时存在的保守势力也不足以改变这种基本态度。
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6·Our main concern so far has been to say if we have a conservative force field it means that the work of a force is the change in the energy.目前为止，我们主要关心的是，如果在保守力场中，力所做的功是，能量的改变。
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7·The article proceeds from the characteristic of doing work of electrostatic field strength and proves that electrostatic field is a conservative force field.文章从静电场力作功的特点出发，说明静电场是保守力场。
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8·Whenever the work that is done - by a force is independent of its path — it's only determined by the starting point - and the end point — that force is called a "conservative force."不管何时一个力做功，与轨迹无关-，只取决于开始点，和结束点-，这个力被称为，守恒力。
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9·On the other hand, the traditional and conservative force of habit existed indomitably, and the conservative consciousness was still present in the peasants' minds and played an important role.但另一方面，传统守旧的习惯势力顽强存在，保守意识在农民头脑中仍居重要地位。
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10·Since gravity is a conservative force, and since my force is always the same in magnitude except in opposite direction, ; it doesn't matter how I move in; it will always come up with the same answer.既然重力是恒定的，我施加的力在大小上,不变，就是方向不同，无所谓我怎么移动;,答案总是,相同的。