反虹吸

backsiphonage的用法和样例：

例句

用作名词(n.)

In the event of negative supply pressure such contaminated fluids will not backflow to the supply source by backsiphonage.万一存在这种污染流体的反压力，则要避免由于反虹吸而回流到供应水源中。
This series is normally used in health hazard applications to protect against backsiphonage and backpressure.这个系列通常用在健康危害应用场合保护不受反虹吸和反压力的损坏。

情景英语口语100主题 001age年龄

Beginner A: how old is Keith? B: hes 21. how old is James？ A: hes a year older than Keith, but he looks younger. B: hows your father? A: hes fine. He retired last week. Its turning poing in his life. Now he can relax and enjoy his retirement. B: he

发表于:2018-12-02 / 阅读(143) / 评论(0)

情景英语口语100主题

Unit Three THE COMPUTER AND THE INFORMATION AGE

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得 10 到 30 积分的奖励 ! Thank you ！

发表于:2018-12-04 / 阅读(341) / 评论(0)

冀教版高中英语必修三

小学二年级英语(深圳朗文版)上册 Unit 1 My age-G

发表于:2018-12-04 / 阅读(83) / 评论(0)

深圳朗文版小学二年级英语

小学二年级英语(深圳朗文版)上册 Unit 1 My age-A

发表于:2018-12-04 / 阅读(86) / 评论(0)

深圳朗文版小学二年级英语

小学二年级英语(深圳朗文版)上册 Unit 1 My age-B

发表于:2018-12-04 / 阅读(88) / 评论(0)

深圳朗文版小学二年级英语

小学二年级英语(深圳朗文版)上册 Unit 1 My age-C

发表于:2018-12-04 / 阅读(78) / 评论(0)

深圳朗文版小学二年级英语

小学二年级英语(深圳朗文版)上册 Unit 1 My age-E

发表于:2018-12-04 / 阅读(91) / 评论(0)

深圳朗文版小学二年级英语

97. The Bronze Age p.161

While on an expedition in western China twenty years ago, some explorers discovered the mummies of a tall, red-haired people. Though estimated to be nearly 4,000 years old, the corpses were quite well

发表于:2018-12-08 / 阅读(336) / 评论(0)

赖世雄中级美国英语

蒋健棠一词多意教程(27):age

haven't seen you for ages.我好久没见到你了。 age有物品或人的年龄的意思，上面age后加了s,是表示很长时间的意思。 What is the age of this building？这建筑物有多少年历史了？ age也指人生的某一时期或年龄段。例如： I used to be a football player when I was

发表于:2018-12-30 / 阅读(132) / 评论(0)

蒋健棠一词多意

英语名篇名段背诵精华39 The tragedy of old age

What is it like to be old in the United States? What will our own lives be like when we are old? Americans find it difficult to think about old age until they are propelled into the midst of it by their own aging and that of relatives and friends. A

发表于:2018-12-31 / 阅读(110) / 评论(0)

英语名著名段背诵精华

Hate in the Digital Age

The Internet and social media are proving to be a double-edged sword. While they expand the possibilities of commerce and information-sharing, they are also used by terrorists(恐怖分子) to recruit members, to promote hate, and even to reveal ways

发表于:2019-01-06 / 阅读(147) / 评论(0)

英语新闻

英语游戏:Age of Japan 2

[全屏观看] 点击右键- 另存为可保存这个Flash影片 Description: Age of Japan is an incredible puzzle entertainment, which shines with unique graphics. All 40 game levels are rendered with Japane...

发表于:2019-01-08 / 阅读(209) / 评论(0)

Daily Free Games

英语游戏:Age of Japan

发表于:2019-01-08 / 阅读(240) / 评论(0)

Daily Free Games

AP美联社一分钟新闻(2010-05-18)

1. BP says it expects to siphon oil from a gushing well in the Gulf of Mexico later tonight. The company says it has had some trouble inserting a tube into the broken well, but it now says it expects to reinsert the siphon Saturday. 2. The government

发表于:2019-01-11 / 阅读(170) / 评论(0)

美联社新闻一分钟2010(五月)

VOA慢速英语-EXPLORATIONS - The Information Age: The Internet

Computers around the world are connected in an extensive communication system called the Internet. Transcript of radio broadcast: 17 June 2008 VOICE ONE: I'm Barbara Klein. VOICE TWO: And I'm Steve Ember with EXPLORATIONS in VOA Special English. Tod

发表于:2019-01-11 / 阅读(149) / 评论(0)

VOA慢速英语2008年（六）月

VOA标准英语2010年-BP Has Some Success in Plugging Oil Le

BP oil company has announced its first major success in containing a massive oil leak in the Gulf of Mexico. Engineers inserted a metal tube into a broken pipe on the sea floor, to siphon oil into a ship on the surface. BP engineers implemented the f

发表于:2019-01-13 / 阅读(130) / 评论(0)

VOA标准英语2010年(五)月

Age 岁月

The same space seems shorter as we grow older, in youth we may have an absolutely new experience, subjective or objective, every hour of the day. Apprehension is vivid,retentiveness strong, and our re

发表于:2019-01-16 / 阅读(233) / 评论(0)

阅读空间

VOA标准英语2008年-Age is Only a Number for Olympic Hopeful, Role-

Swimmer Dara Torres of the United States has tasted Olympic victory. But this year, the 41-year-old mother is carrying more than aspirations for a gold medal on her shoulders - she is carrying the hopes of a generation of athletes and fans. Torres w

发表于:2019-01-31 / 阅读(165) / 评论(0)

VOA标准英语2008年（八月）

学个词Learn a Word 第1215期 age limit

今天我们要学的词是age limit。 Age limit, 年龄限制。社交网站脸书网并不是任何人都能注册帐户的。 Facebook enforces an age limit of 13 years or older to register an account, 脸谱网规定，只有满13岁的人才能注

发表于:2019-02-02 / 阅读(138) / 评论(0)

英语单词荟萃

新西兰英语 266 Raising the driving age

Listen to March 3rd 2010 for background to this. The Minister of Transport, Steven Joyce, said there will be changes for young drivers to improve road safety. We already know that the government has planned to raise the driving age to 16 but this is

发表于:2019-02-16 / 阅读(112) / 评论(0)

新西兰英语

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