磁极探伤法

Women's Pole Vault Provides Stirring Drama at Olympics

By Parke Brewer The women's pole vault provided one of the stirring dramas of the 2004 Olympic track and field competition. Until the mid 1990s, women's pole vault was not taken very seriously, mainly

发表于:2018-12-12 / 阅读(129) / 评论(0)

VOA2004（下）--雅典奥运

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

发表于:2018-12-24 / 阅读(172) / 评论(0)

Scientific American(八)月

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

发表于:2018-12-30 / 阅读(218) / 评论(0)

每日攻克5词

加州语文教材 G5 V5 North Pole, South Pole 09

图片1

发表于:2019-01-08 / 阅读(264) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 11

图片1

发表于:2019-01-08 / 阅读(353) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 12

图片1

发表于:2019-01-08 / 阅读(268) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 13

图片1

发表于:2019-01-08 / 阅读(276) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 10

图片1

发表于:2019-01-08 / 阅读(255) / 评论(0)

加州语文教材California Treasures G5

英语听力：自然百科地球力场 Earth's Force Field—10

Larry Newitt from the Geological Survey of Canada charts the movement of the magnetic North Pole as it wanders the icy reaches of northern Canada. To determine where the magnetic pole / is, we can't rely on one single observation. What I try to do is

发表于:2019-01-22 / 阅读(147) / 评论(0)

自然百科2011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(169) / 评论(0)

英语新闻

加州语文教材 G5 V5 North Pole, South Pole 01

图片1 图片2 图片3

发表于:2019-02-09 / 阅读(240) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 02

图片1

发表于:2019-02-09 / 阅读(216) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 03

图片1

发表于:2019-02-09 / 阅读(247) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 04

图片1

发表于:2019-02-09 / 阅读(271) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 05

图片1

发表于:2019-02-09 / 阅读(265) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 06

图片1

发表于:2019-02-09 / 阅读(242) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 07

图片1

发表于:2019-02-09 / 阅读(278) / 评论(0)

加州语文教材California Treasures G5

加州语文教材 G5 V5 North Pole, South Pole 08

图片1

发表于:2019-02-09 / 阅读(266) / 评论(0)

加州语文教材California Treasures G5

【英语时差8,16】南北两极-下

By calculating how old the rocks are where we find these ancient compasses, we can figure out how long ago the magnetized parts were locked in. That tells us which direction was magnetic north tens of thousands of years ago. Surprisingly, its not alw

发表于:2019-02-23 / 阅读(159) / 评论(0)

英语时差8，16

VOA慢速英语2019--磁极的移动速度比科学家预想的快

Magnetic North Pole Moving Faster Than Scientists Expected Earths north magnetic pole is moving, researchers say. It has moved so much, so quickly that a group of scientists hurried to change a model that helps guide shipping, airplanes and submarine

发表于:2019-03-12 / 阅读(332) / 评论(0)

2019年VOA慢速英语(二)月

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

Aedes spencerii

aluminium-clad uranium

barron ego strength scale

benzine

brake field tube

buy on balance

central data warehouse server

Chilean pine

chocolated beans

churkin

coal-mining machinery