Word · Frequency #30593
var.
/vɑː(r)/
noun
乏；无功伏安
a unit of electrical power in an AC circuit, equal to the power dissipated when 1 volt produces a current of 1 ampere
- 1.
A unit of electrical power, in an AC circuit, equal to the power dissipated when 1 volt produces a current of 1 ampere.
电功率单位,在交流电路中,当1伏特电压产生1安培电流时所消耗的功率。
电功率单位,在交流电路中,当1伏特电压产生1安培电流时所消耗的功率。；增值二手商
In use
A var is the unit used to measure reactive power in an AC circuit.
The capacitor adds 200 vars to the reactive power of the system.
The technician read the meter and noted that the motor required 350 vars.
a var
var为可数名词，指无功功率单位。
The capacitor supplies one var of reactive power.
电容器提供一增值二手商的无功功率。
X vars
The total load is 500 vars.
总负载为500增值二手商。
Common mistakes
The reactive power is 50 VA.The reactive power is 50 vars.
VA (伏安) 是视在功率的单位，而 var (乏) 是无功功率的单位。应使用 vars 表示无功功率。
The circuit requires 100 var.The circuit requires 100 vars.
var 是可数名词，复数形式为 vars。在表示多个单位时，应使用 vars。
Connections
Learner notes
Grammar Note
可数名词
Learn the forms together
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.