交流系统;交流制

alternating-current system的用法和样例：

例句

In favor of this system are its simplicity and its saving with respect to other AC systems.与其它交流系统相比，这系统的优点是它的简单和节约。
With the transformer, the ability to transmit power at high voltage with corresponding lower current and lower line-voltage drops made ac more attractive than dc.变压器使得电能可以在更高电压和更低电流传输，降低了线路电压降，使交流系统比直流系统跟具吸引力。

听一分钟英文：Current Events-时事

I love the news and current events. Im addicted to whats happening in the world. It doesnt matter what kind of news it is, I love watching it. Even if its from countries Ive never heard of. Ill even watch the same news programme three or four times a

发表于:2018-12-04 / 阅读(241) / 评论(0)

听一分钟英文-C

奥运28大项第2课 Archery 箭术02

[00:09.91]北京奥运28大项 [00:30.79]参与，竞争，分享，进步 [00:48.71]Archery 箭术 [00:52.58]英文原文 [00:54.20]No rules disallow the use of pencil for scoring arrows. [00:58.09]The possibility of cheating is prevented by the cross-checking [01:02.27]

发表于:2018-12-05 / 阅读(347) / 评论(0)

奥运28大项比赛

33. A Deadly Current p.213

it is a pity that every summer a few people drown at the beach. In some cases, these people were good swimmers. So how did it happen? Riptide! Riptide is a strong underwater current. It moves quickly

发表于:2018-12-08 / 阅读(496) / 评论(0)

赖世雄中级美国英语

纯正英语一分钟-current events

发表于:2018-12-26 / 阅读(215) / 评论(0)

纯正英语一分钟

美国英语听力80篇3 Lesson51

[00:05.20]Nikola Tesla developed the alternating current power system that provides electricity in the United States. [00:14.42]Many of his other discoveries led to electronic inventions for which other scientists were honored. [00:22.75]Mister Tesla

发表于:2018-12-26 / 阅读(178) / 评论(0)

美国英语听力80篇

奥运28大项第45课 BREASTSTROKE 蛙泳

北京奥运28大项参与，竞争，分享，进步 Swimming 游泳 BREASTSTROKE 蛙泳 From the beginning of the first arm stroke after the start and after each turn, the body shall be kept on the breast. It is not permitted to roll onto the back at any time. Throug

发表于:2018-12-30 / 阅读(355) / 评论(0)

奥运28大项比赛

必背英文面试口语91:你目前的薪资是多少? What is your current salary?

What is your current salary? 你目前的薪资是多少？ I'll be happy to tell you that，我很乐意回答您这个问题。 but I feel more comfortable discussing salary if you let me explain what my current job is and if you explain exactly w

发表于:2018-12-31 / 阅读(311) / 评论(0)

必背英文面试口语

Actor Benedict Cumberbatch Plays Thomas Edison in 'The Current War'

The Weinstein Company planned to release its new film The Current War in the United States this week. But the opening has been delayed until next year. Disgraced film producer Harvey Weinstein heads the company, and he is accused of sexually harassin

发表于:2019-01-03 / 阅读(189) / 评论(0)

2017年VOA慢速英语(十一)月

Japan's Current Account Surplus Rises

By Steve Herman Japan records an increase in its current account surplus, despite a drop for the country's trade surplus. A debt-ridden retail chain accepts a government-backed rescue, and there are m

发表于:2019-01-03 / 阅读(248) / 评论(0)

VOA2004（下）--世界经济

六级词汇与结构练习（41）

坚持不懈，直到成功。我们每天的奋斗就像对参天大树的一次砍击，头几刀可能了无痕迹。每一击看似微不足道，然而，累积起来，巨树终会倒下。这恰

发表于:2019-01-03 / 阅读(181) / 评论(0)

四六级词汇与结构练习

美联社新闻一分钟 AP 2012-11-02

1. Heavy rain and flooding are still major threats for the next couple of days, as superstorm Sandy travels up the East Coast. At least 16 deaths are reported. Millions are without electricity. 2. First flood waters, then fire for an Oceanside neighb

发表于:2019-01-11 / 阅读(216) / 评论(0)

美联社新闻一分钟2012(十一月)

美联社新闻一分钟 AP 2015-4-9

1. A man and his seven children have been found dead in their home in Maryland. Authorities are investigating whether carbon monoxide-poisoning is to blame. Relatives say that the family had been using a generator for heat, after their electricity wa

发表于:2019-01-11 / 阅读(219) / 评论(0)

美联社新闻一分钟2015(四)月

VOA慢速英语2015--特奥会投球手为夏季运动会做准备

AS IT IS 2015-07-23 Special Olympics Bowler Ready for Summer Games 特奥会投球手为夏季运动会做准备 Los Angeles, California is set to welcome more than 7,000 thousand athletes from 177 nations for the Special Olympics World Summer Games.

发表于:2019-01-12 / 阅读(154) / 评论(0)

2015年VOA慢速英语(七)月

ECONOMICS REPORT - Current Account Deficit

ECONOMICS REPORT - Current Account Deficit By Mario Ritter Broadcast: Friday, March 19, 2004 This is Bob Doughty with the VOA Special English Economics Report. The United States recently reported a re

发表于:2019-01-30 / 阅读(176) / 评论(0)

健康与经济

Diego Alves relishes life in Valencia

VALENCIA, Spain, March 23 (Xinhua) -- Valencia goalkeeper Diego Alves took the time to speak to Xinhua in an exclusive interview this week about his experiences at the side which currently lies third in the BBVA Primera Liga table. Alves, 26, joined

发表于:2019-02-02 / 阅读(179) / 评论(0)

英语新闻

CCTV9英语新闻：电力恢复到76%的家庭，道路重新开放

Power has been restored to nearly eighty percent of households in the epicenter of the quake. The quake cut off electricity in ten townships in Ludian County. By noon Tuesday, the Yunnan provincial electricity company have brought three 35-kilovolt t

发表于:2019-02-04 / 阅读(203) / 评论(0)

CCTV9英语新闻2014年08月

Japan's current account surplus drops 15.7% on year in Nov

TOKYO, Jan. 12 (Xinhua) -- Japan's current account surplus（顺差） fell 15.7 percent in November from a year earlier, the Ministry of Finance said Wednesday. The nation's current account surplus in the recording period stood at 926.2 billion yen

发表于:2019-02-04 / 阅读(188) / 评论(0)

英语新闻

摇滚:A Current Affair - Love One Another

歌曲： Love One Another 艺人： A Current Affair 音乐星级： ★★★ 所属专辑： Life in an Hourglass 发行年代： 2007 风格： Alternative Rock 介绍： A Current Affair是一只来自美国加州的由5人组成的摇滚乐队。他们最初被当地的广播台挖掘，而广播台也因

发表于:2019-02-20 / 阅读(264) / 评论(0)

英文摇滚歌曲

CCTV9英语新闻：Yi Gang: current reserve is reasonable

The deputy governor of China's central bank, Yi Gang, said in an interview with CCTV that China's foreign exchange reserve is within reasonable range. Our foreign exchange reserve increased from less than 300 billion US dollars in 2002 to 3.99 trilli

发表于:2019-02-25 / 阅读(224) / 评论(0)

cctv9英语新闻2016年

陨落星辰第一季第151期:一家人的离别

Here you go, Mr. Scott. Okay. 斯科特先生，给你。好 Oh, this must be really messing their heads up. 这个肯定能扰乱它们的攻势 The frequency's still locked in place. 频率还锁定在这个地方 How are you feeling? 你感觉怎样

发表于:2019-03-02 / 阅读(341) / 评论(0)

陨落星辰第一季

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

alternate operation columns