scalar electrical conductivity

例句：

1. 1. Scalars are used to represent quantities that do not change with the position of an object.
   标量用于表示不随物体位置变化的量。
2. 2.In electromagnetism, a scalar potential is a function that represents the potential energy of a point charge.
   在电磁学中，标量势是一个函数，它代表点电荷的势能。
3. 3.The scalar field theory is a fundamental theory in quantum mechanics.
   标量场理论是量子力学的一个基本理论。