什么是化学键的本质?
化学是关于最小的物体构成其他更大的物体,以及当它们变化时会发生什么的一门学科。
Chemistry is about the smallest things that other bigger things are made of, and what happens when they change.
,我是一个系统,其余的是周围的环境,那么当我在做所有的化学反应,去四处移动我的手臂的时候,什么量是常数?
What's the one function of state that's constant when I'm doing all my chemical reactions to move my arms around?
而有关更好的电池材料的研究是没有止境的,Pyykko博士的发现也许给我们提供了一些新的思考方向——化学重金属在电池和其他地方还有什么作为?
Still, the search for better batteries is an endless one, and Dr Pyykko’s discovery might prompt some new thinking about what is possible in this and other areas of heavy-element chemistry.
你有你的技能,你是个厨师、化学家或者慈善工作者,没有什么能改变这个事实。
You have your capabilities; you may be a cook or a chemist or a charity worker and nothing can take that away.
记忆是当你暴露于某件事物 以后才发生的物理和化学过程。如果有什么东西打断了这一过程,记忆将不会被存储下来。
Memory is a physical/chemicalprocess that happens after you've been exposed to something, and if anything interrupts the process, the memory is not stored.
那烧心症状到底是由什么引起的呢?食品化学师想探个究竟。
But food chemists [Veronika Somoza et al.] wanted to know exactly which chemicals were behind the heartburn.
你是由无生命的化学物质组成的;那么,又是什么使你有了生命呢?
You are made up of lifeless chemicals; what makes you alive?
这就是为什么化学工程师是应届毕业生中薪酬最高的职业之一。
That is why chemical engineers are among the best-paid new graduates.
一位名叫周武宗的化学家说:“另外一所大学的同事跟我说:‘你肯定不知道烛火是由什么构成的’。”
Wuzong Zhou, a professor of chemistry, said: 'a colleague from another university said to me: "of course, no one knows what a candle flame is actually made of."
发生了什么事,我们认为,是预处理(化学)淹没了泵的分隔器,我们会在不想要流体的地方得到一些流体,这将要我们花一段时间完成一套程序来修复它。
What happened, the pre-treat (chemical), we think, flooded the pump separator and we may have got some fluid where we didn't want it and it'll take us a while to work through a procedure to recover.
“但是,补救很简单。”他说,“加拿大人需要知道他们买的香水中有什么,确保这些香水是经过安全检测的,而且知道最有害的化学成份是被禁止的。”
"Yet, the fix is simple, " he said "Canadians need to know what's in the perfume they're buying, be assured the perfumes are safety-tested and know that the most harmful chemicals are banned."
我们现今已经如果没有计算机模拟便不能制造出汽车、飞机甚至是玩具,那么为什么生物化学就不可以呢?
"We can't build cars and airplanes or even toys these days without computer modeling and simulation," he said. "So why not biochemistry?"
本文探讨了什么是科学素养,并在此基础上,阐述了化学科学素养的基本内涵、地位、作用及其实施化学科学素养教育的现实意义。
This paper discusses what is scientific literacy and based on this, expound the basic meaning, status, function of chemical scientific literacy and the importance to carry out it.
麦克雷:你问我吗?这些化学物质,电气什么的,哪样都能。他已经不再是个人了,它是个怪物。
Mccree: you ask me, you promise something for these chemicals electricity and what not? It's not a man, it's a monster.
我想了解一些与下学期分子化学工程课有关的东西。我不明白为什么需要这门课,毕竟化学工程师是与宏观的过程打交道的。
I was wondering about next semester 's course in molecular chemical engineering. I don't understand the need for it, after all, chemical engineers deal with bulk processes.
化学老师:什么是水?
因此,我们已经获得了大量的材料具有不同孔隙度,结构和表面化学,什么是很少在文献中发现。
As a result, we have obtained a large number of materials with different porosities, structure and surface chemistry, what is rarely found in the literature.
学化学有一个原因是想弄清楚那些化妆品都卖的是什么。
One of the reasons I choose chemistry is I wanna find out what they sell in the cosmetics section.
什么是植物化学物质,它们是否可以降低癌症风险?
有时候,可能是由基因造成。基因是单个细胞中的化学单位。它们传播指示,通知细胞应该做什么。一些时候,父母会把异常的基因传给自己的孩子。
Sometimes it may be caused by genes. genes are chemical units found in every cell. they carry the instruction telling cells what to do. sometimes, children receive abnormal genes from their parents.
本文从物理学的角度探讨了什么是电化学势,并讨论了电化学势在物理化学中的应用。
What is chemical potential from physical point and application of electrical chemical potential in physical chemistry were discussed in this paper.
市场应该很好的,只要芽苗菜是天然的,没有经过什么 化学物质催化。
The market should be very good, wanting bud seedling food only is natural, did not pass catalysis of what chemistry material.
分析:化学用语,指决定某一物质样品之物理性质或化学组成的步骤。定性分析建立在含有什么,而定量分析是测量有多少含量。
Analysis: in chemistry, the determination of the properties and composition of samples of materials; qualitative analysis establishes what is there, and quantitative analysis measures how much.
一般哺乳动物,鸟和爬行在普通分类中处于相同的等级。解释这为什么在真正的进化学分类中是不准确的。
In the conventional Linnaean classification of life, mammals, birds and reptiles are given equivalent rank. explain why this is inappropriate in a genuine evolutionary classification.
麦克雷:你问我吗?这些化学物质,电气什么的,哪样都能。他已经不再是个人了,它是个怪物。 %。
Mccree: : You ask me, you promise something for these chemicals electricity and what not? It's not a man, it's a monster.
本文介绍了什么是“目标教学法”以及它在化学课堂上的实施过程和结果。
The article introduces what is"target teaching method"and what is its process and result when it is put into practice in chemistry classes.
这个公司生产过最为毒性化学产品的历史表明孟山都公司为什么是不可信的。
The company's history with some of the most toxic chemicals ever produced, illustrates why they can't be trusted.
什么是爱情从某种程度上说,爱情是一种生物化学反应,但这种反应不可能延续长久。
What is love on one level it is a biochemical reaction, and that cannot endure.
什么是爱情从某种程度上说,爱情是一种生物化学反应,但这种反应不可能延续长久。
What is love on one level it is a biochemical reaction, and that cannot endure.
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