| 1. | A central force is one derived from a potential-energy function that is spherically symmetric .
中心力是由球对称的势能函数而来的力。
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| 2. | A central force is a radial force which depends only on the distance from the origin .
有心力是一种径向力，它的大小只取于离原点的距离。
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| 3. | A central force is defined as a force acting along the line joining a particle or object to a center of force .
辏力就是沿着质点（或物体）向力心连接线方向作用的力。
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| 4. | Potential of central forces
有心力势
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| 5. | For example , the chinese terms for " central force " , " entropy " and " enthalpy " are so accurately translated with linguistic competence , one could not have figured them out without a profound literary background
例如在物理学里的中心的“辏力” ，热力学里的“熵”和“焓” ，是多么确切而又有韵味，没有好的文学根底是想不出来的。
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