Phrase

potential difference

noun

电位差；电势差

1.
the difference in potential energy between two points in an electric field; the difference in charge between two points in an electrical circuit; voltage
电场中两点之间的势能差；电路中两点之间的电荷差；电压。

电场中两点之间的势能差；电路中两点之间的电荷差；电压。；电位差；[化] 势差; 位差; 电势差; 电位差

In use

The multimeter measures the potential difference between the two terminals.

万用表测量两个端子之间的电位差。

You can calculate the potential difference if you know the current and the resistance.

如果你知道电流和电阻，就能算出电势差。

A battery creates a potential difference across the circuit.

电池在电路两端产生电位差。

常用于描述两点之间的电位差。

The potential difference between the two terminals is 12 volts.

两个端子之间的电位差是12伏。

Measure the potential difference across the resistor.

测量电阻两端的电位差。

We need to calculate the potential difference in this circuit.

我们需要计算这个电路中的电位差。

We need to potential difference these two points.We need to measure the potential difference between these two points.

误将名词短语“potential difference”用作动词；正确用法是使用动词如“measure”后接名词短语。

The potential difference in the two points is 5V.The potential difference between the two points is 5V.

介词使用错误：描述两点之间的电势差应使用“between”，而非“in”。

potential: 电势；潜力 · Potential difference 是两点之间的电势差值，而 potential 指某点的电势或抽象的可能性。
potential energy: 势能 · Potential difference 是电压，而 potential energy 是物体由于位置而具有的能量。

页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。

Dictionary facts from ECDICT, WIKTIONARY.