例句與造句

1. Method of symmetrical coordinates
   對(duì)稱坐標(biāo)法
2. Accurate mathematical model is set based on the whole system , and simulator program of dynamic and steady condition is established , which is use to calculate the dynamic and steady performance by kron and symmetrical coordinate converter
   論文通過對(duì)電機(jī)基本方程進(jìn)行kron變換和對(duì)稱分量變換，分別建立了系統(tǒng)完整的數(shù)學(xué)模型，編制了動(dòng)態(tài)和穩(wěn)態(tài)仿真程序，并對(duì)系統(tǒng)進(jìn)行了仿真，對(duì)系統(tǒng)的動(dòng)態(tài)、穩(wěn)態(tài)性能進(jìn)行分析。
3. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed , which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system , and simulator program of dynamic and steady condition is established , which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system , a comparison is made between predicted and experimental characteristics , experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion , harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched , which cancelled the low harmonic and improve the system performance
   通過對(duì)電機(jī)的kron變換和對(duì)稱分量變換，建立了系統(tǒng)較精確的數(shù)學(xué)模型，編制了系統(tǒng)動(dòng)態(tài)及穩(wěn)態(tài)運(yùn)行的仿真計(jì)算程序分別計(jì)算系統(tǒng)的動(dòng)態(tài)和穩(wěn)態(tài)性能。通過對(duì)系統(tǒng)的具體參數(shù)進(jìn)行了仿真運(yùn)算和實(shí)驗(yàn)研究，實(shí)驗(yàn)和仿真結(jié)果進(jìn)行比較，說明實(shí)驗(yàn)和理論較為一致，并從系統(tǒng)效率、轉(zhuǎn)矩脈動(dòng)及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動(dòng)機(jī)組成的變頻調(diào)速系統(tǒng)加以比較。在此基礎(chǔ)上，對(duì)兩相逆變器供電-異步電動(dòng)機(jī)系統(tǒng)使用諧波抑制pwm控制進(jìn)行了研究，由于減少了低次諧波，改善了系統(tǒng)性能。
4. It's difficult to find symmetrical coordinate in a sentence. 用symmetrical coordinate造句挺難的