机械类词汇大全-50

2059 、 铸模；模子 mould 2060 、 铸模成形；倒模成形；模塑 moulding 2061 、 铸钢；生钢 caststeel 2062 、 铸铁；生铁 castiron 2063 、 廿三画 2064 、 纤维 fibre 2065

高中英语人教版必修3 02

[00:04.28]Reading COME AND EAT HEAR(1) [00:09.12]Wang Pengwei sat in his empty restaurant feelling very frustrated. [00:15.05]It had been a very strange morning. [00:17.92]Usually he got up early prepared his menu of mutton kebabs, [00:23.28]roast po

SSS 2011-04-20

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t

SSS 2010-03-26

This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because

SSS 2010-01-19

Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c

英语语法：168 Concrete Versus Cement

Grammar Girl here. Todays topic is cement versus concrete. Guest writer Sal Glynn writes: Accuracy is important. You might think concrete and cement are interchangeable, but you'll quickly find that you're mistaken when some guy at Home Depot rolls h

60秒科学:冬暖夏凉的屋顶

Lowering the Ceiling on Roof Energy Losses Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because traditional black asphalt roofs heat up in summer and s

SSS 2008-09-01

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor

SSS 2011-02-07

Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don

SSS 2011-04-06

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene

高中英语人教版高一下13

[00:07.39]Lesson 57 1.Dialogue [00:12.54]AT THE DOCTOR'S [00:15.78]Sharon is visiting a doctor,Dr Yang. [00:21.03]What can I do for you,sharon? [00:24.58]Well,I couldn't sleep last night. [00:29.15]What was the matter? [00:31.90]I've got a pain here.

VOA慢速英语--研究人员研发完全可降解轮胎

Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o

招标、投标和广告

INVITATION FOR BIDS, BID AND ADVERTISEMENTS 招标、投标和广告 Introduction Bidding is another form of trading in international business. When enterprises, utilities as well as governments are in need of certain materials, products or planning

VOA标准英语2010年-California Company's 'Green' Cement Ca

Cement is a major component of concrete, the world's most widely used man-made material, an integral part of roads, bridges and buildings. But making cement requires heating limestone and other materials to very high temperatures, a process that rele

过去将来一般时的语法知识

过去将来一般时的基本概念和形式 过去将来一般时(future-in-the-past indefinite tense)表示对于过去某一时间而言将要发生的动作或存在的状态。 过去将来一般时由should(第一人称)或would(第二、三人称

口语:各种袜子肿么说?

不管是热天还是冷天，总会看到那么多MM穿着各种丝袜,露出傲娇的大长（肠）腿。 今天，我们就一起来盘点一下各种各样的裤袜吧！ Tights（连裤袜）：又称Pantyhose，连短裤和长筒袜于一体，齐

2018年CRI Tibet to have universal fibre-optical broadband service

China's Tibet Autonomous Region is about to achieve a universal coverage of fibre-optical broadband service ahead of its schedule. As China further rolled out its universal broadband project, Tibet's broadband service is looking to reach 98% of admin

英语笑话听力+文本：也许真管用(maybe it works)

[00:11.27]Maybe it works 也许真管用！ [00:21.85]词汇扫描 [00:25.55]Speech course 演讲课 [00:29.05]Honor 纪念 [00:32.59]Patience 耐心 [00:36.18]Remind 提醒 [00:39.66]Reinforce 加强 [00:43.64]英文原文 [00:45.31]During the colle

二战启示录 第10期:希特勒霸权的崛起(10)

These northern part of front is maned by a French army and a British expeditionary forces later reinforced by Canadians and troops from the far from British Empire. 法国军队和英国远征军控制防线北部区域。后来由来自遥远英国的

新西兰英语 446 Wool Week

Wool Week opened early yesterday morning in Wellington with a display of sheep shearing at the railway station. Then children brought in their pet lambs. People on their way to work stopped to watch. Then there was a fashion parade of woolen clothes