常見例句雙語例句The constitute of harmonic back EMF is analysed, the position detection circuit and the microcomputer control system of step motor is designed.分析了諧波反電勢信號的搆成，設(shè)計了相應(yīng)的位置信號檢測 電路及步進電動機的微機控制系統(tǒng)。This paper analyzes the advantage of using sensorless brushless DC motor in fuzzy conversing air-condition, the back EMF method and the start technique.介紹變頻空調(diào)採用無傳感器無刷直流電機作爲(wèi)壓縮機的優(yōu)越性，反電勢檢測的基本原理以及起動方法。The magnetic network model of hybrid step motor is established according to the air gap late permeance method, and the expression of the harmonic back EMF is deduced.利用氣隙比磁導(dǎo)法建立了混郃式步進電動機的磁網(wǎng)絡(luò)模型，推導(dǎo)出諧波反電勢的表達式。權(quán)威例句For some who understand the biophysics of RF and EMF, going back to first principles provides a reality check on a possible threat from this low energy form of radiation.FORBES: Should The FCC Re-Examine Cell Phone Radiation? 返回 back emf