If we do work on any body, the principle of conservation of energy tells us that the work done must all be accounted for in some way.
如果我们对某一物体做功，能量守恒的原理告诉我们：所做的功全都必须以某种方式来产生的。
This article introduce circuitry system structure of solar energy tour ship and principle of work, set forth part of circuitry design in detail.
介绍了太阳能旅游船的电路系统结构及工作原理，并对部分电路的设计进行了详细的阐述。
With the principle of work and power, as well as Poynting vector, the reasons for the energy variation in the process of connecting capacitances in parallel are analyzed and discussed.
本文用功能关系和坡印亭矢量分析和讨论了电容器并联过程中能量的变化原因。
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