电流、电压是电力系统的基本物理量。
Current and voltage are elementary parameters in power system.
时间是描述物质运动的一个基本物理量。
Time is one of the basic physical variables to describe object movements.
我已经讲过,长度、时间、质量,它们被称为,三个基本物理量。
I already introduced, as you see there length, time and mass and we call these the three fundamental quantities in physics.
There's a zeroth law The zeroth law every one of these laws basically defines the quantity in thermodynamics and then defines the concept.
有第零定律,这些定律中的每一条都定义了,热力学中一个基本物理量的概念,第零定律定义了温度。
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