我们来考虑一下如何划分单键、双键和三键。
Let's think about how we can classify single and double and triple bonds,.
是氢的键更短，还是氮与氮的三键更短？
Is a hydrogen bond shorter, or is a nitrogen-nitrogen triple bond going to be shorter?
一个三键，同样的也有沿着核间轴sigma键。
A triple bond, again is going to have one sigma bond on the internuclear axis.
然后那里还有一个三键，因为我们有三对电子。
And then we have a triple bond there because we have 3 pairs of electrons.
炔烃三键介绍。
卤原子作为炔烃三键活化基团和定位基，炔烃三键发生亲电加成反应；
This type of reaction has signicant advantages, the alkyne proceeds the coupling reaction with the halogen atom as the leaving group.
而我们以后还会看到三键，举例来说，应该更强，相较于相应的双键，或者相应的单键来说。
And something that we'll see later on is that triple bonds, for example, are going to be stronger than a corresponding double bond or a corresponding single bond.
第三阶段为来源记忆提取阶段，要求被试用三键区分新词、红色旧词和蓝色旧词。
Source memory retrieval phase: Subjects were instructed to judge among the new words, the old red words and the old blue words.
让我们想想怎么来分类单键双键,和三键，这在我们在考虑sigma键,和π键是很有用的。
So let's think about how we can classify single and double and triple bonds, which is what we're really used to dealing with in terms of these sigma bonds and these pi bonds.
让我们来看一看乙炔的例子，我们有两个碳原子，成三键，每个碳和一个碳一个氢相连。
So let's take the case of acetylene where we have two carbon atoms that are going to be triple bonded to each other, each are bonded to a carbon and then to one hydrogen.
三键操作，1600dpi与蓝牙2.0连接确保了该款鼠标能胜任大多数家庭和办公工作。
Three button operation, 1600dpi laser technology and Bluetooth 2.0 connectivity ensure that the eclipse touchmouse can cope with a multitude of home and office tasks.
研制了用于加工摩托车离合器外环内孔表面的三键圆弧摆线拉刀，分析了拉刀的结构特点和设计、制造要点。
The three spline broach with radius pendulum profile is developed to broach the internal surface of motorcycle clutches.
因此，如果我们讨论的是氮与氮之间的单键，双键与三键，那么三键应该是其中最短的一个，同时也是最强的一个。
So, if we talked about a nitrogen-nitrogen single versus double versus triple bond, the triple bond will be the shortest and it will be the strongest.
计算结果表明，氟代和氯代磷杂硫烯酮为累积双烯结构，磷杂硫烯酮的异构体含CP三键，所有分子都具有弯曲几何构型。
The results of calculation show that fluophosphathioketene and chlorophasphatioketene presents cumulative double bonds, isomer presents C(P)triple bonds, all of molecules have a trans-bent geometries.
这个分子非常简单，因为我们知道应该把它们放在哪里，甚至不用去想，我们只有一个选择，我们将在碳与氮之间形成一个三键。
This is very easy molecule because we know exactly where to put them without even having to think, we only have one option, and we'll make a triple bond between the carbon and the nitrogen.
这看起来整洁了不少,如果我们把氰化氢的路易斯结构画成这样的话，这样我们就有氢与碳之间的单键和碳与氮之间三键，然后还有一对孤对电子在氮这里。
So it looks a lot less messy if we just draw our Lewis structure like this for h c n, where we have h bonded to c triple bonded to n, and then a lone pair on the nitrogen there.
比如，在这下面我写的是氮分子2,而这个是氢分子，但我在上面把这些分子的形式改写了，大家可以看到,这是一个氢与氢之间的单键，含一个氮与氮之间的三键。
So, for example, down here I wrote that it was n 2 and that it was h 2, but when I re-wrote the molecules up here, you saw that it's an h h single bond where it's a nitrogen-nitrogen triple bond.
实验结果表明光还原法更能有效快速地裂解三硫酯键。
The results showed that the photoreduction is a more rapid and efficient that can cleave the trithiocarbonate.
这三种成分相互交织，直接形成共价键。
These three components are interwoven, and direct covalent linkages.
我们看到3对成键电子所以这是一个三重键，它确实是多重键。
We see three bonding pairs so this is a triple bond, indeed a multiple bond.
一个分区键应该包括一至三个列。
我们讨论的特点根据快捷键以及鼠标手势分为三类：所有窗口、应用窗口和显示桌面。
The feature debuted with just three modes, accessible by keyboard shortcuts and mouse gestures: All Windows, Application Windows, and Show Desktop.
三个控制键用于控制舱内的灯光颜色和氛围，为用户量身定制的网状座椅能够最大地保证长时间坐立的舒适性。
The three dial control lets you control the color and ambiance of the light within and the custom made rubber mesh seat ensures optimum comfort during long sittings.
本文描述了实现作为主键的代理键的三种方法。
This article described three approaches to implementing a surrogate key as primary key.
还有那些按钮也很难对付，但我还是搞明白了：“放入”键是个直角三角形，“停止”键是两条竖线。
It's rather hard to deal with buttons, but I managed to do it: "Insert" is a right triangle, "Stop" - two vertical lines.
磷链构成DNA的骨架及其化学键，特别是在一种叫做三磷酸腺苷的分子中。 三磷酸腺苷是生物体储存能量的一种重要形式。
Phosphorus chains form the backbone of DNA and its chemical bonds, particularly in a molecule known as adenosine triphosphate, the principal means by which biological creatures store energy.
相反，石墨的柔软和易滑脱特性源于它的碳原子形成了“平面的”化学键，导致了三明治式的层片状原子，而层间吸引力很微弱。
By contrast, graphite is soft and slippery because its carbon atoms form "flat" bonds, resulting in sandwiched sheets of atoms that weakly attract one another.
从清单2的输出，您可以看到在数据库中有三个键。
From the output of Listing 2, you can see that there are three keys in the database.
共有三个，开机/锁定(一个键)、上/下（两个键）。
There are a total of three, power/lock (one button) and up/down volume (two buttons).
共有三个，开机/锁定(一个键)、上/下（两个键）。
There are a total of three, power/lock (one button) and up/down volume (two buttons).
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