查询词典 back-step

In this paper, an improved sensorless control strategy, which is based on the detection of zero crosspoints of back-EMF, is proposed. In this method, only one feed back signal is needed to sense terminal voltages and no motor neutral line is required. The phase shifter errors in traditional methods are eliminated.

本文同时提出了一种改进的无位置传感器检测方法，这种方法基于反电势过零点检测的基本原理，采用单路位置反馈信号，无须引出电机中性线，硬件结构简单，消除了传统检测方法中由于深度滤波产生的相移和误差。

Taylor Dent and Ivan Navarro turned back the clock back late Friday night on Grandstand court at the US Open as they put on a serve-and-volley feast for fans.

在美网的Grandstand赛场上将周五的晚上变成了一个漫长的夜晚，为大家展示了一场发球与截击的好戏。

He pulls up the back of her nightgown to reveal two small bumps on her lower back.

他掀起她背后的睡衣，亮出她背后下方的两个小肿块。

A,an=not ab,abs=away ad,a,ac,ad,af,al,an,ap,as,at=to;at ambi=both ana=up ante=before anti=against auto=self be=do bene=good cata=complete cent=hundred circum=around co,com,con=together contra=against de=down,off dec,deka=ten dia=across dis=apart duo,di,twi=two dys=bad en=make ento=inside epi=upon equi=equal eu=good ex,ec,e=out fore=ahead hetero=different holo=complete homo=same hyper=above hypo=below in,il,im,ir=inside;not infra=below inter,intel=between intra,intro=within iso=same macro=big mal=bad medi=middle mega=giant meta=change micro=small mis=wrongly mono=one multi,poly=many neo=new nona,ennea=nine ob,oc,of,op=toward oct=eight omni=all orth=straight pan=all para=beside per=through peri=around post=after pre,pri=before prin=first pro=forward quad,tetra=four quint,penta=five re=back retro=back se=apart semi,demi,hemi=half sept,hepta=seven sext,hexa=six solo=alone sub,suc,suf,sug,sum,sup,sur,sus=under super,sur=over supra=above syn,sym=same tele=far trans,tra=across tri,ter=three un,ne,non=not uni=one ultra=beyond

成年人学英文的第一课和第二课刊出后，有数位读者写E-mail给我。有一位说道：「一篇文章的每一个单字都查到解释了，但整篇文章就是看不懂，怎麼办？」另一位说：「我的文法很差，没办法写完整的英文句子，要如何补救？」当发音和字汇都掌握住学习要领之后，剩下的就是「读」和「写」了，这才符合学习英文的正确步骤：听→说→读→写。台湾传统的学习方式由「写」开始，再「读」，然后才「说」，最后再去补救「听」力，可以说是背道而行，难怪效果不彰。那麼学习「读」的要诀是什麼呢？当然最重要的是能够了解整个句子的涵义。记得初中的时候背了很多文法规则，考试的分数虽然很高，但是对「读」的能力没有帮助。连那个时候流行的「英语九百句型」，也从来没有耐心读完过。然而我们今天能够看懂中文的文章，难道是因为我们熟悉中文的文法吗？答案是否定的。同样地，一个美国人虽然能阅读报纸，但是要求他做「英文文法分析」，他可能也会傻眼。英文的句子其实不需要去靠文法书中的规则去了解，文法书只应当作参考书，在有疑惑的时候才去查阅。平常应养成「约定成俗」的习惯，就是看别人怎麼用，然后「依样画葫芦」，日积月累，文法规则就化为无形了。因此，要训练「读」的技巧，不应该是靠文法规则，而是要多读。但是在读之前，要具备「了解句子」的基本能力，这就是我们的第三课─了解英文句子的要诀。了解英文句子的关键，在於先抓住「主词」和「动词」。看到一句很长的英文句子，不要害怕：先找主词，再找动词。动词如果是「及物动词」，再去找「受词」。主词、动词、受词之外，剩下的通通当做修饰语，有的修饰主词，有的修饰动词，有的修饰受词，有的修饰全句；任何两个完整的句子都可以用连接词连接起来。以上简单几句话，就是了解英文句子的基本观念。了解英文句子的第二步是熟悉英语的五种基本句型，其中前两种与不及物动词有关，后三种与及物动词有关。以下的句子中，用大括号表示{主词}或{受词}，中括号表示，剩下的部份都是修饰语。第一种与不及物动词有关的基本句型叫做「简单不及物句型」（Intransitive Verb，简称I），请背住以下五个句子

When I look back to last year, I could nto imagine myself back in the university or graduating, seems like they are lifetimes away.

当我回顾过去的一年，我无法想象自己早在上大学或即将毕业的，好像他们是在有生之年消失。

As with the loop back null modem cable, these signals are not connected to the other device, but directly looped back on the same connector.

就像自反馈的无猫电缆，这些信号没有连接到另一那台设备，而是从相同的接口直接反馈回去。

To go back home, back to that place is full of obsession.

该回家了，回到那个充满执念的地方。

We arrived at school full of stories-of who had fallen hard on the ice at Sargent's Hill, of the cool (and 15)lethal 16Viking-sword-shaped piece of fiberglass discovered on the 17scrap heap out back of the machine shop, of the big bottles of dusty off-brand soda discovered at the very bottom of the cooler out back of Charlie Drake's corner store, soda he'd sell for the same price amazing!

我们带着各种各样的趣事回到学校：例如谁在沙准特山上的冰面上重重地摔下啦；冰冷的海盗剑形状的玻璃纤维在工厂后面的垃圾堆堆积如山啦；染满灰尘、商标脱落的大瓶汽水被压在查理·德雷克小卖店里冰柜的最底层，而价钱和小得多的百事汽水一样

We arrived at school full of stories-of who had fallen hard on the ice at Sargent's Hill, of the cool Viking-sword-shaped piece of fiberglass discovered on the scrap heap out back of the machine shop, of the big bottles of dusty off-brand soda discovered at the very bottom of the cooler out back of Charlie Drake's corner store, soda he'd sell for the same price amazing!

我们带着各种各样的趣事回到学校：例如谁在沙准特山上的冰面上重重地摔下啦；冰冷的海盗剑形状的玻璃纤维在工厂后面的垃圾堆堆积如山啦；染满灰尘、商标脱落的大瓶汽水被压在查理？

Normally, on an off-day after a back-to-back, Jackson might've given the team a day off.

往常，在两场背靠背比赛之后，杰克森一般会给球队放一天假。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。