exit n. 1.出口,出路,太平門。 2.【電學(xué)】引出端;排氣管。 3.外出;離去;死亡;【戲劇】退場(chǎng)(opp. entrance)。 make one's exit退出;退場(chǎng);去世。 vi. 1.退出,離去。 2.死,去世。 vi. 〔拉丁語(yǔ)〕 【戲劇】退場(chǎng) 〔cf. exeunt; opp. enter〕.
wound n. 傷,負(fù)傷,創(chuàng)傷;損害,損傷;屈辱;苦痛;〔詩(shī)〕戀愛的痛苦。 a mortal wound 致命傷。 an open wound 有傷口的傷;顯露的恥辱。 a severe [slight] wound 重[輕]傷。 receive a wound 受傷。 vt. 傷,傷害(人、感情等)。 the wounded 受傷的(人),傷員。 wound sb.'s pride 損傷某人的自尊心。 vi. 打傷;傷害。 willing to wound 懷有惡意的。 wound2 wind2,3 的過去式及過去分詞。
At this range , the exit wound ought to be about the size of a small tangerine 在這個(gè)距離內(nèi)擊中你的話傷口應(yīng)該跟一只小橘子差不多大吧
This thesis shown that vscf ac exited wind power system with stator field - oriented vector control has a series of good performance and all the control schemes which had been introduced in this paper has its feasibility 本文研究結(jié)果表明,采用定子磁場(chǎng)定向矢量控制的交流勵(lì)磁風(fēng)力發(fā)電機(jī)系統(tǒng)具有許多優(yōu)越的性能,且本文采用的控制技術(shù)和進(jìn)行的控制相關(guān)分析都是可行的。
In this article a new type wind generator - ac exited wind generator is introduced which new technology scheme by the variable - speed constant - frequency methods at the present time . the thesis mostly studies the way of some control methods and analysis the characters of vscf wind power system 本文全面介紹了一種最新應(yīng)用于風(fēng)力發(fā)電的變速恒頻技術(shù)、基于變速恒頻技術(shù)的新型電機(jī)?交流勵(lì)磁發(fā)電機(jī)及交流勵(lì)磁風(fēng)力發(fā)電機(jī)系統(tǒng)的各種控制原理。
It also builds the mathematic model of all section of vscf ac exited wind power generation system on a - b - b and d - q coordinate system by the coordinate commutation technology . the thesis gives the characteristics of torque , active power , reactive power and the steady - state analysis of it . it proves that the capability of wind generator is determined to slip , the amplitude and phase of rotor voltage , the phase dispatch between stator voltage and rotor voltage 并分析了交流勵(lì)磁風(fēng)力發(fā)電機(jī)作變速恒頻運(yùn)行時(shí)的工作原理,闡述了與同步發(fā)電機(jī)、異步發(fā)電機(jī)的不同之處,分析了其能量平衡關(guān)系,在坐標(biāo)變換技術(shù)的幫助下,詳細(xì)推導(dǎo)了交流勵(lì)磁發(fā)電機(jī)在a - b - c坐標(biāo)系和d - q坐標(biāo)系下的數(shù)學(xué)模型,分析并仿真了其有功和無功特性、轉(zhuǎn)矩和功率調(diào)節(jié)特性、穩(wěn)態(tài)運(yùn)行和機(jī)械特性,證明了發(fā)電機(jī)的性能由轉(zhuǎn)差率、轉(zhuǎn)子電壓的相位和幅值、定轉(zhuǎn)子電壓相位差所決定的。
In lately years , people widely pay attention to wind energy because it is a regenerated cleanness energy . it began development in high rate 20 years before . it is a fact that the variable - speed constant - frequency ( vscf ) ac exited wind generator system is a main subject in the wind electric power generator schemes 近年來,風(fēng)能作為一種可再生的清潔能源日益受到世界各國(guó)的廣泛重視,風(fēng)力發(fā)電快速發(fā)展已有將近20年的歷史,其中基于變速恒頻技術(shù)的交流勵(lì)磁風(fēng)力發(fā)電機(jī)發(fā)電方案已經(jīng)是風(fēng)力發(fā)電中的一大重點(diǎn)課題。