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新密市做眼袋手术多少钱挂号专家洛阳市做黑脸娃娃多少钱

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郑州市第二人民医院韩式三点双眼皮多少钱河南韩式双眼皮三分钟搞定科技英语(视频+中英字幕) 第1期:增强现实技术《三分钟搞定科技英语》属于《原来如此》系列的英语视频听力栏目,用一系列绘图拼接视频,生动形象地展示了科技英语知识,能够激发人们的英语学习兴趣 ,是拓展英语知识面,积累科技英语词汇,了解科技中的一些常识的极好材料。 Article/201507/385852洛阳市去疤痕多少钱 栏目简介:;Shanghai Live; focuses on big events in the city and major issues around the world, and presents them in a practical and audience-friendly manner to meet the ever-evolving needs of Shanghai#39;s English-speaking viewers,both local and expatriate.《直播上海英语电台》集中报道城市大事件以及全球热点话题,并以观众喜闻乐见的方式呈现给大家,从而满足上海本地以及上海海外人士的英语需求。 Article/201505/374493I don#39;t think you see anything happening to you现在应该还没发生I#39;m still working on it我还在努力I#39;m getting tired here我有点累了Something happening?发生了什么吗Oh, my goodness, I could see myself哦,我的天,我可以看到我自己了Well, this is a real workout, I#39;ll tell you这个真的是太费体力了So what we#39;ve created here is a beautiful silver mirrored flask这里我们做成了一个银镜烧瓶So look at that看这个Dr. Dolhun has created a beautiful silver mirrorDolhun士做成了一个漂亮的银镜It almost looks like a Christmas tree ornament就像是圣诞树上的装饰品一样and a silver ornament could in fact be made this way银色装饰确实也可以这样做So here#39;s what#39;s happening这里情况是这样的Electrons from here, the glucose电子来自葡萄糖get transferred to the silver reducing it to silver 0被转移给银离子,将其还原为Ag?Silver 0 is insoluble in water. It#39;s just silver metal Ag?不溶于水,也就是银金属And it#39;s precipitating out on the inside of the flask它会沉淀到烧瓶内面forming the beautiful silver mirror that we see形成我们所看到的漂亮银镜Now this process is called reduction这个过程叫作还原And whenever something is reduced有东西被还原something else is oxidized就有东西被氧化So the glucose must be getting oxidized被氧化的必然是葡萄糖It becomes this它变成这个An oxygen was added here一个氧被加到这里Now this process is similar to metabolism in our bodies这个过程很类似于我们体内的代谢过程We remove electrons from the sugar we eat我们也会从吃下的糖中移除一个电子and transfer them to the oxygen that we breathe将其转移给我们呼入的氧气In a reduction reaction like ;mirror, mirror;;魔镜魔镜;这样的还原反应there might be energy released会释放出能量In your body, this energy is harnessed in chemical bonds人体内,这些能量会用化学键储存起来stored for later以便日后使用The point of Tollens test was not to produce silver mirrorsTollens测试的本身目的不是为了制造银镜although a similar reaction is used for that today虽然现在类似反应确实被用作这个用途The point was to distinguish between two types of sugars其本身目的是为了区分两种糖One is containing aldehydes and one is containing ketones一种中包含醛,一种中包含酮Let me draw those我画一下这些The difference is that in an aldehyde差别在于,醛中the carbon is connected to hydrogen碳是同氢相连的and in the ketone, the carbon is connected to another carbon而酮同,碳是和另一个碳相连的Aldehydes are more reactive than ketones醛比酮的反应性更强so they will react with the silver ions所以它们能同银离子反应while the ketones will not而酮则不能That#39;s it for me. Hopefully, you enjoyed this 就到这里吧,但愿大家喜欢这个视频And I will see you next time我们下次再见 Article/201501/352467郑州大学一附院割双眼皮多少钱

郑州医学整形美容激光祛太田痣多少钱音乐家与社会活动家 诺 获颁 2005 TED Prize 时的精演说。 诺认为援助非洲不是另一个明星标榜的事业,而是一个世界级的危机。 Article/201507/383465郑州市中心医院整形美容 栏目简介:;Shanghai Live; focuses on big events in the city and major issues around the world, and presents them in a practical and audience-friendly manner to meet the ever-evolving needs of Shanghai#39;s English-speaking viewers,both local and expatriate.《直播上海英语电台》集中报道城市大事件以及全球热点话题,并以观众喜闻乐见的方式呈现给大家,从而满足上海本地以及上海海外人士的英语需求。 Article/201504/367667新乡市第二人民医院祛疤多少钱

郑州市华山整形医院整形美容中心We know this because in 1982我们知道这些,是因为在1982年a group of scientists including myself包括我在内的一群科学家spent three solid weeks working it out.花了整整三周的时间才将此一探究竟Although the calculations were hard,尽管计算过程繁复demonstrating what we discovered is easy.但明我们的发现却很简单First, I need a nice flat floor like this one, for example.首先,我需要一块像这样的水平地板This is the dining room in my college.这里是我所在大学的餐厅I#39;m going to fill the place with lots and lots of ball bearings.我将用无以计数的钢珠覆盖地面These balls represent the matter of the early universe,这些钢珠代表着早期宇宙中的物质a thin gas sp out evenly across the vast cosmos.即均匀扩散到广袤宇宙之中的稀薄气体Here#39;s where luck comes in.这时,好运来了If they are all the same distance apart,如果他们彼此间距离相同gravity pulls each ball每个钢珠在所有方向上the same amount in all directions.受到的万有引力大小是相同的They stay perfectly aligned它们会相当均衡地排列开来and precisely nothing happens.什么都不会发生Fortunately, one of the basic rules of the universe幸运的是,宇宙基本规则之一便是is that nothing#39;s perfect.万物皆不完美Perfection simply doesn#39;t exist.世间不存在十全十美The early universe had a tiny unevenness早期宇宙存在着微小的不平衡that can be simulated by removing just five ball bearings.仅移走五颗钢珠就能再现情景It may not look like much has changed,变化看似不足为奇but to gravity,但对于万有引力来说those missing balls create a giant opportunity.这些缺失的钢珠却创造出了巨大的机会Gravity now pulls more strongly on one side of some of the bearings.引力在某一方向上作用更强The tiny irregularities in the sea of ball bearings无数钢珠中微小的不规则have given gravity something to sink its teeth into.给了万有引力发挥作用的机会And this is exactly what happened back where we left the young universe.这正是刚才讲到的年轻的宇宙所发生的事Parts of the sea of early gas were ever so slightly thinner than others.部分早期的雾气要比其他部分略微稀薄一些The less dense areas were like the gaps between the ball bearings.较为稀疏的区域就像是钢珠之间的空隙The denser parts of the sea of gas较为密集的雾气部分where gravity was having its way clumped together.则在万有引力作用下凝聚在一起And it was in these areas也正是在这些区域里that all the stars and galaxies would fall.才汇聚成所有的恒星和星系 Article/201508/396319 栏目介绍:搞笑英语轻松学通过不同的搞笑生活片段来学习日常口语,领域涉及生活的各个方面,让我们既可以学习到地道的口语,还能够爆笑一番。快来看看吧。 Article/201507/385818郑州/臀部吸脂多少钱河南省华山整形医院隆鼻多少钱

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