gradient of electrochemical potential

例句：

1. 1. The gradient of the slope is steeper than that of the other side.
   这个斜坡的斜率比另一侧的要陡。
2. 2. The gradient of the chemical potential is a measure of how much energy is required to change the state of asubstance.
   化学势梯度是衡量改变物质状态所需能量的量度。
3. 3.The gradient of the temperature changes with altitude.
   温度梯度随海拔变化而变化。