[电] 磁密度

magnetic density的用法和样例：

例句

The spin-down rate has been measured for almost every radio pulsar, and theory indicates that it depends on the strength of the star's magnetic field.这种自转变慢的速率，几乎每一颗无线电波霎都量得到，而理论指出，此速率和星体的磁场强度有关。
The number of permanent magnets is two or more than two, the two poles of each magnet are arranged staggeringly to produce the alternate magnetic field.本发明的保健牙刷克服了现有磁癖牙刷中的磁场强度不够，疗效不明显及刷毛的倒毛现象等缺点。

Living with the Future

1) Split-second lunches, 2) color-keyed 3) disposable dishes — all part of the instant society of tomorrow. The early vision of disposability was that somehow it just melted into the atmosphere. The

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疯狂英语2002年

Catch Me If You Can

Catch Me If You Can FBI Agent: I'd like you to take a look at something for me. Tell me what you think. Frank: That’s a 1) fake. FBI Agent: How do you know? You haven’t looked at it. Frank: Well,

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疯狂英语2003年

消失的法老城市13

But it had taken Pusch and Bietak years of excavation just to unearth the garrison. At this rate of digging ,it would take hundreds of years to prove if they had truly found the site of Piramesse. And so they turned, instead, to a new technology tha

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遗失的法老城市

太阳科普第15期

The key difference of course is that a sunspot's 最关键的不同点在于太阳黑子 an awful lot bigger and so the total energy, 大得多，所以太阳磁场内 or the amount of energy in the magnetic field 所含的总能量大得惊人 on th

发表于:2018-12-07 / 阅读(279) / 评论(0)

太阳科普

太阳科普第14期

It sits a million miles away from the Earth 它位于距地球一百万里处的 at the Lagrangian point 拉格朗日点 where the gravitational pull from the Earth and the sun is equal. 此处地球和太阳的引力相等 Fixed in space it has an u

发表于:2018-12-07 / 阅读(226) / 评论(0)

太阳科普

UNIT 5 Go With Transportation Lesson 34: Trains Go on Rails!

[ti:UNIT 5 Go With Transportation Lesson 34: Trains Go on Rails!] [0:00.580]UNIT 5 第五单元 [0:02.491]Go with Transportation! 乘交通工具去！ [0:05.156]Lesson 34: 第34课： [0:07.415]Trains Go on Rails! 火车在铁轨上行驶！ [0:10.3

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河北教育初中英语（初中起点）八年级下册

SSS 2008-08-26

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Don't be fooled by those big bovine eyes and the mouth slowly chewing cudcows have a magnetic personality. At least thats the claim made by German researchers in the

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Scientific American(八)月

跟艾米莉一起学口语第40期:变成

change into把...变成... You can't change iron into gold. 你不能把铁变成金。 I want to change dollars into pounds. 我想把美元换成英镑。 A:Yesterday I bought a sweater from your store.and I'm afraid it's too small for.so I want to

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跟艾米莉一起学口语

王玉梅托福词汇 Word_list_24

词条含义近义 leisurely adj. 从容的，悠闲的 unhurried , slow lengthen vt. 延长，使变长 extend, elongate lengthy adj. ( 演说、文章等 ) 冗长的，啰嗦的 redundant, long le

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王玉梅托福词汇配套MP3

第74期: kneel, lap, magnetic, nasty, zero

说一口流利的英语，从简单的单词开始。听听，读读，背背，今天你的词汇量又增加了5个。单词/词义中英例句单词听读 kneel [ ni:l ] She knelt to pray. v. 跪

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每日攻克5词

太阳科普第16期

The auroras dancing displays of celestial light 在天空中熠熠生辉的极光 are caused by particles from the solar storm smashing 是太阳风暴夹带的微粒 through the magnetic field at the poles. 撞击地球两极磁场的结果 When the

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太阳科普

科学家们努力了解地球磁场

Scientists Work to Understand Earth's Magnetic Field 科学家们努力了解地球磁场 Most of us rarely think about the earth's magnetic field. We might know that it helps guide birds as they travel and keeps our compasses pointing north. But, th

发表于:2019-01-12 / 阅读(180) / 评论(0)

2015年VOA慢速英语(八)月

VOA标准英语2013--Magnetic Ring Used to Stop Acid Reflux

Magnetic Ring Used to Stop Acid Reflux Heartburn is usually linked to gastric acid that reaches the esophagus when a weak muscle does not close as it should after swallowing. When stomach juices back up into the esophagus, the acid can cause a burnin

发表于:2019-01-14 / 阅读(245) / 评论(0)

VOA标准英语2013年(四月)

CCTV9英语新闻：China's first permanent magnetic monorail train successfully completes test run

China's first permanent magnetic monorail train has successfully completed a test run in the city of Qingdao, in Shandong Province. The high-tech urban transportation system features strong climbing capacity, a small turning radius, energy efficiency

发表于:2019-02-05 / 阅读(204) / 评论(0)

cctv9英语新闻2016年

Magnetic Bubbles Detected at Edge of Solar System

The latest data from the twin Voyager spacecrafts suggest the outer edge of the solar system is not smooth but filled with giant magnetic bubbles. Scientists say the turbulent bubbles are the result of the interaction between the Suns magnetic field

发表于:2019-02-06 / 阅读(209) / 评论(0)

英语新闻

英语歌曲：周五晚上Pub见：Magnetic Man - I Need Air

周五晚上Pub见：Magnetic Man - I Need Air Magnetic Man，来自英国的新人，这首电子风的新单曲本周同样杀入英国单曲榜前十一周上榜那么多舞曲，生活需不需要这么五彩缤纷啊这张单曲封面要不要这么

发表于:2019-02-11 / 阅读(189) / 评论(0)

经典英文歌曲

英语歌曲:周五晚上Pub见Magnetic Man - I Need Air

发表于:2019-02-14 / 阅读(223) / 评论(0)

流行英文歌曲

China province mulls law on radioactive pollution control

LANZHOU, Feb. 11 (Xinhua) -- Northwest China's Gansu Province, home to the country's earliest nuclear base, plans to draft a new law on radioactive pollution control this year, the local government said Saturday. Lawmakers in the landlocked province

发表于:2019-02-17 / 阅读(194) / 评论(0)

英语新闻

口语不好，如何给老外打电话？

客户打电话，一般存在这样三个阶段： 1.不敢打，不知道怎么打 2.尝试打，习惯了直接打，不做准备 3.蓦然回首，总结出如何去打电话。第一个阶段不管是新人还是老鸟，想必都是深有体会的

发表于:2019-02-19 / 阅读(176) / 评论(0)

英语口语

GRE试题一(2)

16. UPBRAlD : REPROACH :: (A) dote : like (B) lal: : stray (C) vex : please (D) earn : desire (E) recast : explain Directions: Each passage in this group is followed by questions based on its content.

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实用英语

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