un. 蒸气压缩制冷系统
[网络] 蒸汽压缩机制冷系统

疯狂情景会话真功夫 71.Windflowers

Windflowers, windflowers [00:02.43]风飞花，风飞花 [00:04.86]My father told me not to go near them [00:07.46]父亲对我说别走近它 [00:10.06]He said he feared them always [00:11.49]他说他总有些害怕 [00:12.93]And he told me that th

发表于:2018-11-28 / 阅读(119) / 评论(0)

零距离李阳疯狂英语口语

用Mp3背六级单词045

maintenance inflict identification unemployment intensify decay idiom outbreak idleness beam overwhelming shipwreck graphite thrifty preset misfortune untie compression immortal weary roam transplant impartial vocal

发表于:2018-12-01 / 阅读(160) / 评论(0)

用Mp3背六级单词

60秒科学:新CPR,免去人工呼吸的尴尬

New data show that when bystanders without emergency medical training try CPR using only chest compression, the results can be better than if they also attempt mouth-to-mouth. Christopher Intagliata reports 看见身边有人突然倒了，想救人家

发表于:2018-12-07 / 阅读(163) / 评论(0)

60秒科学

机械类词汇大全-45

1849 、静摩擦 staticfriction 1850 、颈轴承 journalbearing 1851 、颈缩 necking 1852 、频带宽度 bandwidth 1853 、频率 frequency 1854 、头座 headstock 1855 、阈值；临界值

发表于:2018-12-08 / 阅读(80) / 评论(0)

英文名句短语

Are Brazil’s Rainforests in Danger?

The United Nations Climate Summit takes place next week in Poland. About 20,000 people from 190 countries are expected to take part in the conference. There, world leaders will debate how to limit climate change -- the weather events linked to slowly

发表于:2018-12-14 / 阅读(65) / 评论(0)

2018年VOA慢速英语(十一)月

SSS 2008-08-25

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute? For accurate weather forecasting and climate analysis, researchers need the best models possible about how the air circulates above the earth. And a new study is challe

发表于:2018-12-24 / 阅读(75) / 评论(0)

Scientific American(八)月

商务口语第67讲:制造工程(2)

1.Computer-Aided Manufacturing(CAM) 计算机辅助制造 A: Is CAM used in China? B: Yes，it has been uesd in China for almost twenty years. A：在中国有使用CAM的吗？ B：有啊，在中国使用已经将近20年了。 2.Hot working 热加工 A: What are the hot working proc

发表于:2018-12-26 / 阅读(96) / 评论(0)

天天商务口语

【一起听英语】人口大爆炸

人口数量增长速度过快。给我们的生存环境带来哪些影响？ Alice: Hello, I'm Alice Finn: And I'm Finn. Alice: And this is 6 Minute English! This week were talking about population growth and the effects it might have on the world.

发表于:2018-12-27 / 阅读(86) / 评论(0)

一起听英语

电信专业英英词典D-4

D type Channel Bank A D type channel bank is channel termination equipment used for combining (multiplexing) individual analog channel signals on a time division basis. D type channel banks provide in

发表于:2019-01-03 / 阅读(142) / 评论(0)

电信英语

Population explosion

Alice: Hello, I'm AliceFinn: And I'm Finn.Alice: And this is 6 Minute English! This week were talking about populationgrowth and the effects it might have on the world. At the moment itsestimated that there are about 7 billion people on the planet. F

发表于:2019-01-07 / 阅读(104) / 评论(0)

六分钟英语

VOA标准英语2010年-CPR Works Without Mouth-to-Mouth

Study finds chest compressions are the real life-saver Art Chimes | St. Louis, Missouri 29 July 2010 Cardiopulmonary resuscitation, or CPR, has been around in its modern form for about 50 years. Its rhythms of chest compressions and mouth-to-mouth br

发表于:2019-01-13 / 阅读(87) / 评论(0)

VOA标准英语2010年(七)月

囧研究全球变暖都怪速冻饺子

a very interesting read about the rapid expansion of refrigeration in China: 关于中国制冷业的快速发展，有一个有趣的事实： It is not simply transforming how Chinese people grow, distribute and consume food. It also stands to beco

发表于:2019-01-21 / 阅读(144) / 评论(0)

英语新闻

电子香烟惹争议

电子香烟惹争议 Should electronic cigarettes be a new option for smokers trying to kick the habit? Reactions from Americans are mixed. More than half of people questioned in a poll think electronic cigarettes should be regulated by the US Food

发表于:2019-02-05 / 阅读(65) / 评论(0)

实用英语

旅游人们最爱带啥? 国人大爱方便面

Forget flip flops and sun tan lotion, it's coffee and ketchup that holidaymakers consider their packing essentials, according to a new study. 一项最新研究显示，度假行李中的必备物品根本不是人字拖和防晒霜，而是咖啡和番

发表于:2019-02-09 / 阅读(43) / 评论(0)

阅读空间

Vast water vapor beyond solar system found

BEIJING, Oct. 21 (Xinhuanet) -- A team of European researchers announced that they have found vast water vapor out of our solar system, according to a study in the U.S. journal Science Friday. Using Herschel Space Observatory, a European Space Agency

发表于:2019-02-09 / 阅读(91) / 评论(0)

英语新闻

英语小达人 299 What the Student Say in Science Classes

What the Student Say in Science Classes 自然科学课上学生们都说了什么 The following quotations were gleaned from classroom discussions in 5th and 6th grade science classes. 下面的这些话都是从五六年级的自然科学课的课堂

发表于:2019-02-17 / 阅读(75) / 评论(0)

英语小达人

万物简史第386期:浩瀚的海洋(5)

There are 320 million cubic miles of water on Earth and that is all we're ever going to get. 地球上有13亿立方公里水，这是全部。 The system is closed: practically speaking, nothing can be added or subtracted. 系统已经关闭，说得明

发表于:2019-02-25 / 阅读(75) / 评论(0)

万物简史

英语听书《白鲸记》第785期

I know not that any other author has hinted of the matter; 我不知道是否有其他作家提及此事， but by inference it seems to me that the sturgeon must be divided in the same way as the whale, 不过据我推断，鲟鱼也一定是按大鲸

发表于:2019-02-25 / 阅读(71) / 评论(0)

白鲸记

你是否还会坚持原来的样子

Surmounting Life's Obstacles - Do You Cling to What You Were Before? 跨越生命中的障碍您还坚持原来的样子吗? A little stream flowed down from a high mountain far, far away through many villages and forests, until it reached a desert.

发表于:2019-03-03 / 阅读(144) / 评论(0)

英语美文

英语听书《白鲸记》第324期

He was going on with some wild reminiscences about his tomahawk-pipe which, it seemed, had in its two uses both brained his foes and soothed his soul, 他是在对他那烟斗斧发狂思,那东西,在我们直接注意这个熟睡的索匠的时候,好

发表于:2019-03-10 / 阅读(123) / 评论(0)

白鲸记

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学英语单词

abd-el

acid metal

acute non-specific gingivitis

benefit of early harvest

Biganos

blackley