隔膜阀；膜板阀；给水调整阀

2009-02-07&2009-02-09 脉搏快有问题？

So how is it, doc? It goes alright? Good. OK. I have my pulse checked coz Jim from Texas says his pulse is fast, really fast and he'd like to know if he should worry about it. Is a fast pulse an indication of anything specific? Well, you'd know the n

发表于:2018-12-11 / 阅读(229) / 评论(0)

访谈录2009

英语听力—环球英语 1401 Why Do I Hiccup?

Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Ryan Geertsma. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 The year was 1922. Charles Osborn

发表于:2018-12-19 / 阅读(175) / 评论(0)

环球英语 Spotlight

洪恩环境英语第九册复习 lesson three

REVIEW THREE For this lesson,you'll need a pencil and a piece of paper. Listen to this lecture about the history of the computer. Don't write anything yet.Just listen The inventor of the modern computer was an English mathematician,Charles Babbage. H

发表于:2018-12-25 / 阅读(139) / 评论(0)

洪恩环境英语

【小龟乐游记】蝙蝠侠：阿甘之城（12）

文本： Batman:I'm listening. Joker:Is someone feeling a little _(1)_? Batman:What do you want? Joker:Oh,Bats,cheer up.It won't kill you.Oops. Batman:Where is the cure? Who has it? Joker:I had our cold-hearted friend Mister Freeze making it.But he'

发表于:2018-12-28 / 阅读(510) / 评论(0)

小龟乐游记英语短文

英语听力文摘 English Digest 604、声速测量

In the 17th century, the French scientist Pierre Gassendi knew that light traveled faster than sound. When a gun fired far away, he could see the flash of gunshot long before he heard the report. Gassendi tried to measure the speed of sound by clocki

发表于:2018-12-31 / 阅读(169) / 评论(0)

英语听力文摘 English Digest

听歌学英语：TV In The Morning-DNCE

And all of the heavy hearts 所有沉重的心 Are broke in their backs 都悄悄地不为人知地伤痕累累 And all of the die-hard valentines 所有顽固的情人 Are calling me back 都在挽回我 You can find me in the restaurant 你会发现我

发表于:2019-01-03 / 阅读(142) / 评论(0)

听歌学英语

NPR 2010-07-13

BP is close to putting a new cap on the damaged well that's been spewing millions of gallons of oil into the Gulf since April's rig explosion. NPR's Richard Harris tells us the new cap has valves that might be able to stop the flow. The new cap could

发表于:2019-01-08 / 阅读(171) / 评论(0)

2010年NPR美国国家公共电台7月

VOA标准英语2009年-Russia, Ukraine Open Gas Valves

Russia and Ukraine have resumed the flow of natural gas to Europe, ending a mid-winter standoff that left millions of consumers on the continent without heat or power during 13 days of bitter cold. An official at a metering station owned by Russia's

发表于:2019-01-13 / 阅读(178) / 评论(0)

VOA标准英语2009年(一月)

【英语时差8,16】打嗝……打嗝……为什么我们会打嗝？

Weve all experienced them at one time or another, often right after a big meal. A normal bout of hiccups usually lasts only a few minutes and may contain up to seventy individual hics. Unlike coughing or sneezing which can help clear your airways, hi

发表于:2019-01-22 / 阅读(192) / 评论(0)

英语时差8，16

趣味青春英语电台第233期:Practice what you preach

Idiom: Practice what you preach 言行一致 Hit the book: Audience Circumstance Proceed Resist Channel Suppress 1. If you want to talk (or sing, act, etc.), you have to breathe. And if you want to do these things calmly, you'll need to breathe diaph

发表于:2019-01-22 / 阅读(212) / 评论(0)

趣味青春英语

吹小号的天鹅第58期:夏天的尾声

Chapter 13 End of Summer 第十三章夏天的尾声 A trumpet has three little valves. They are for the fingers of the player. 一把小号有三个小活瓣。它们是让吹奏者用手指来按的。它们看起来就像这样： By pushing them

发表于:2019-01-29 / 阅读(176) / 评论(0)

吹小号的天鹅

工程师助手小词典

1、阀门种类术语 Air valves 空气阀门 Angle Stop valves 角式截止阀 Angle Throttle Valves 角式节流阀 Angle Type Globe Valves 门角式截止阀 Ash valves 排灰阀 Aspirating valves 吸（抽）气阀 Auxiliary valves 辅助（副）阀 Balance valves 平衡阀 Bellows valves

发表于:2019-02-01 / 阅读(155) / 评论(0)

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adiabatic condensation