您要查找的是不是：
- Abstract: Carrier phase-shifted PWM and power unit cascaded to achieve multi-level inverter, its technical difficulty is how to produce so many PWM control signals. 用载波移相PWM和功率单元级联来实现多电平逆变器，其技术难点在于如何实现大量的PWM控制信号。
- The luminous intensity on unit area. 单位面积上的发光强度。
- She was experimenting in selected units. 她在试点单位进行试验。
- The family is the smallest social unit. 家庭是社会最小的单位。
- Pressure is force per unit area. 压力就是电单位面积上的力。
- A set of data elements which are handled as a unit. 作为一个单元来处理的一组数据元素。
- The family is the basic unit of society. 家庭是社会的基本单位。
- A continuous inked ribbon used on output units. 在输出设备(如打印机)上使用的一种连续上油墨的色带。
- Units Cascaded 单元串联
- A metric unit of area equal to 10 ares. 十公亩面积的公制单位之一，等于十公亩。
- A metric unit of mass equal to 100 grams. 百克公制质量单位，等于100克。
- A unit of power equal to 1,000 watts. 千瓦功率的单位，等于1,000瓦。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- The carpenter knocked up some kitchen units for us out of old pine. 木匠用老杉木为我们匆匆做了几件厨房用具。
- A unit of currency in Chile, Panama, and Uruguay. 分智利、巴拿马和乌拉圭的货币单位
- A space between two objects, points, or units. 间隔，空隙两上物体、点、或构件之间的空间
- A metrical unit consisting of seven feet. 七韵步由七个音步组成的格律单位
- A unit of currency in North Korea and South Korea. 朝鲜和韩国的一种货币单位
- A squad is the smallest unit in an army. 班是军队的最小构成单位。
- The monetary unit of Great Britain is the pound. 英国的货币单位是镑。
