题目内容
Thermodynamics, science of the relationship between heat, work, temperature, and energy. In broad terms, thermodynamics deals with the transfer of energy from one place to another and from one form to another.
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Thermodynamic equilibrium, in which there is no tendency for the state of a system to change spontaneously (自发地). 热力学平衡,其中系统状态不存在自发改变的趋势。
When the wave propagates (传播) in the medium, the kinetic energy and potential energy of the volume of elements (体积微元) have the same changing laws.
负反馈放大电路中，若反馈信号取样于输出电压，则引入的是____反馈，若反馈信号取样于输出电流，则引入的是____反馈；
电压负反馈能稳定输出____。
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