second class current 中文意思是什麼
second class current
解釋
第二類流-
Then second class are the macroscopic models describing directly macroscopic quantities such as charge density, charge current density, energy density and temperature etc.
另一類是宏觀模型,其直接描述電荷密度,電流密度,能量密度和溫度等一些宏觀量。
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