Chelex树脂, 螯合树脂[Bio-Rad公司离子交换树脂的商品名, 是带有亚氨基二乙酸根离子能基的苯乙烯-二乙烯苯共聚物, 其功能基可以螯合金属离子( 特别是过渡金属离子)]

Genesis 创世记02

2Thus the heavens and the earth were completed in all their vast array. 2By the seventh day God had finished the work he had been doing; so on the seventh day he rested from all his work. 3And God blessed the seventh day and made it holy, because on

发表于:2018-12-05 / 阅读(171) / 评论(0)

创世记

听电影学英语-别惹蚂蚁 03

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发表于:2018-12-07 / 阅读(240) / 评论(0)

听电影学英语-别惹蚂蚁

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Lesson 77 mummy 木乃伊 The mummy of an Egyptian woman who died in 800 B.C. 死于公元前800年的一位埃及妇女 has just had just had an operation. 的木乃伊刚刚接受了一次手术。 Many mummies have been found in the Silk Road. 在丝

发表于:2018-12-08 / 阅读(566) / 评论(0)

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SSS 2009-12-09

Almost three centuries after his death, Antonio Stradivari is still a legend for the sound of his instruments, from the rich depths of his cellos [cello sound] to the soaring clarity of his violins [violin sound]. Theories are often put forth that St

发表于:2018-12-24 / 阅读(143) / 评论(0)

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童年时，好多小朋友都有过爬树的经历.... Dan: Hello and welcome to this weeks 6 Minute English. Im Dan Walker Smith and today Im joined by Kate. Now in todays programme and in next weeks programme were talking about tree climbing. So I

发表于:2018-12-27 / 阅读(150) / 评论(0)

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发表于:2019-01-01 / 阅读(176) / 评论(0)

生活大爆炸第三季

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211 、木工工作台 woodworker'sbench 212 、木工车床 woodturninglathe;woodworkinglathe 213 、木工铅笔 carpenter'spencil 214 、木工刨床 thicknessingandplanningmachine 215 、木牙

发表于:2019-01-03 / 阅读(147) / 评论(0)

英文名句短语

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This is the VOA Special English Agriculture Report. An American expert in food science technology has won a major international award. Philip E. Nelson has been named winner of the Two Thousand Seven World Food Prize. World Food Prize Foundation Pres

发表于:2019-01-11 / 阅读(196) / 评论(0)

VOA慢速英语2007年（七）月

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There is a curse that has plagued humanity since ancient times. 从古代起就有一种诅咒一直让人类饱受折磨。 The Greeks fought it by chewing aromatic resins, while the Chinese resorted to egg shells. 古希腊人通过咀嚼芳香树脂

发表于:2019-01-17 / 阅读(157) / 评论(0)

TED演讲教育篇

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That dress looks perfect right off the rack, and that crisp button-down shirt is never going to be any brighter or whiter than the moment you buy it. So is it really necessary to go to all of the trouble of washing those brand-new garments before you

发表于:2019-01-20 / 阅读(177) / 评论(0)

阅读空间

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2010年上海世博会游览外国馆中英文对话 Xiao Luo: Look at the square building.Its France Pavilion.Lets go inside. 小罗：瞧那个正方形的建筑，是法国馆。走，进去看看。 Lily ：Watch, in the court the garden with a p

发表于:2019-02-01 / 阅读(152) / 评论(0)

实用英语

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Organization, Teamwork, and Communication Facing Business Challenges At Lexmark International From IBM to Independence How do you build a new, independent organization after years of control by a giga

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发表于:2019-02-04 / 阅读(182) / 评论(0)

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Tree climbing: Part 1 NB: This is not an accurate word-for-word transcript Dan: Hello and welcome to this weeks 6 Minute English. Im Dan Walker Smith and today Im joined by Kate. Now in todays programme and in next weeks programme were talking about

发表于:2019-02-05 / 阅读(230) / 评论(0)

六分钟英语

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Childhood and Poetry One time, investigating in the backyard of our house in Temuco the tiny objects and minuscule beings of my world, I came upon a hole in one of the boards of the fence. I looked through the hole and saw a landscape like that behin

发表于:2019-02-08 / 阅读(170) / 评论(0)

英语作文

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It's our new big idea.Easy. We can just remould the design for the Imperial Lemon. 这是我们的新想法。简单，我们可以翻新一下皇家柠檬的设计。 Can they Anna?Is that what you wanted?To get what you want, you need to explain ex

发表于:2019-02-12 / 阅读(142) / 评论(0)

职场英文口语

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小编导读：酸甜苦辣的说的是味道，也是人生百态。味道背后的故事你都知道吗? 1. EAGER 1、热切 The word eager goes back to the French word aigre, meaning sour. In English, it first took on the sense of sharp, biting, o

发表于:2019-02-17 / 阅读(149) / 评论(0)

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发表于:2019-02-18 / 阅读(127) / 评论(0)

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LONDON, June 16 (Xinhua) -- Drillings and fillings at the dentist's are always dreadful and make tooth decay treatment very unpleasant. But British scientists have developed a new approach of fixing tooth decay, which could get rid of all the drillin

发表于:2019-02-18 / 阅读(173) / 评论(0)

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a roof over your head

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confirming judgement