样式规则包含冒号而不包含伪类。
使用伪类选择器来改变内容？
清单4显示了：after伪类技术所使用的CSS代码。
Listing 4 shows the CSS code for the: after pseudo-class technique.
通过这样做，从而向不必需要伪类的其它事物隐藏了该伪类。
Doing so hides the sham from other things that don't necessarily need it.
开头，冒号后面是伪类的名称和包含在圆括号中的可选参数。
A pseudo-class always consists of a "colon" (:) followed by the name of the pseudo-class and optionally by a value between parentheses.
伪元素与伪类相似（语法也相同），但它定义的是文档中的内容。
Pseudo-elements are similar to pseudo-classes (and share syntax with them) but define content within the document. Pseudo-elements defined by the CSS2 Recommendation include
你可以通过配置CSS中链接的active伪类来添加一个按下的按钮状态。
You can add a pressed button state with CSS by styling the active pseudo-class of the link in question.
伪类的表示方法是在名称前面加一个冒号。伪类与特定元素无关，而是根据文档中发生的情况应用样式。
Designated by a colon preceding the name, pseudo-classes are independent of particular elements and instead look at what's happening within the document.
一个简单选择符或者是一个类型选择符，或者是一个全局选择符，紧跟在后的是零个或多个属性选择符，ID选择符或伪类，次序任意。
A simple selector is either a type selector or universal selector followed immediately by zero or more attribute selectors, ID selectors, or pseudo-classes, in any order.
这跟别的CSS下拉菜单比起来并不是很难——在li元素上设置鼠标经过的样式，然后ie会因为它不支持：hover伪类的实现而显示异样。
This is not much different than any other CSS dropdown menu — the hover is on the li element, so IE will choke due to its poor implementation of the :hover psuedo-class.
还没有得到广泛支持的其他伪类包括：first - child、：link、：visited、：active、：focus和：lang。
Other, less-widely supported pseudo-classes include: first-child, : link, : visited, : active, and: focus and: lang. Note that a pseudo-class can be applied to a specific element type, like this.
我对悬停伪类(hover pseudoclass)也进行了设置，因为有一次当我悬停在该类的链接上时，会改变链接的悬停状态的颜色，从而背景图会消失。
I also included the hover pseudoclass since I had a problem that when I hovered over links with this class, they would turn the color of my link hover state, making the background image disappear.
并不是真正的编程语言,好比某种“伪英语“，或“类C语言“,你现在在语法中看到的就是所谓的伪代码，非常随意。
It's just some bogus language we made up that's kind of English-like, kind of look C-like now that you've seen this syntax, but it was just an arbitrary language.
利用不动点理论，给出了一类半线性微分方程有界的调和伪概周期解存在的充分条件。
Using fixed point theorems, in this paper we give sufficient conditions of the existence of bounded mild pseudo almost periodic solution for some semilinear differential equations.
基于你坚守的是伪脚踏实地类的秘密，你的这段恋爱关系没有任何意义。
You cannot have any sort of meaningful relationship based on the pseudo solid ground of secrets.
构造一类具有伪随机序列性质的循环码，并利用良好的伪随机序列的相关特性，对循环码进行相关译码。
The cyclic code based on pseudorandom sequence, and its decoding can take advantage of the nice characteristic of pseudorandom sequence's correlation.
本文研究了两类具体含逐段常变量微分方程的伪概周期解的存在性问题和一类一阶微分方程组的数值解。
In this paper, the existences of almost periodic solutions and pseudo almost periodic solutions for several classes of functional differential equations are investigated.
归纳三类多传感器量测融合算法，即扩维滤波法、伪序贯滤波法和复合量测滤波法。
Currently there exist three multisensor measurement fusion methods, namely, augmented method, pseudo-sequential filtering method, and combined measurement filtering method.
广义自缩序列是基于LFSR的一类非常规钟控的序列，具有良好的伪随机性，可以用作加密时的密钥流。
Generalized self -shrinking sequences is a class of sequence, which is based on LFSR, with irregularly clocked, and it has good pseudo-randomness.
本文应用分子动力学模拟方法，研究了丁二酰亚胺类分散剂模型分子在伪烟炱表面的吸附行为。
Molecular Dynamics simulation was used in this paper to study the adsorption behaviors of various succinimide dispersants on pseudo-soot surface.
为解决这个问题，提出了一类可以抑制探测器响应不一致性，从而能消除环状伪影的扫描采样方式；
In order to mitigate this situation, a class of scan sampling patterns was proposed, which could suppress the non_uniform response and consequently decrease the ring artifacts.
在第二章提出了一类新的广义自缩序列，研究表明该类序列具有较好的伪随机性质；
In chapter two, a new q-ary generalized self-shrinking sequence is introduced. The sequences generated have good pseudo-randomness.
基于交错方法构造出了一类新的伪随机序列，称为GMW相控序列。
Based on the interleave method, a new class of binary pseudorandom sequences is constructed, which is called GMW Phase Controlled sequence (or GMW PC sequence).
目的：寻找鹿线粒体DNA上区别于常见伪充鹿类药材来源动物的种属特异性片段。
OBJECTIVE: to find the species distinctive segment of mtDNA which can be used to distinguish the deer from those animals always used to make false medicine of deer.
讨论了伪抛物方程的一类非线性非局部边值问题，得到了当区域固定时解的存在唯一性，并就当区域变化时解的极限性态进行了探。
The existence and uniqueness of solution are proved when the domain is fixed, and the limit behaviour of solutions is obtained as the domain is changed.
在一定条件下，证明一类拟线性伪双曲方程的第一初边值问题古典解的存在性。
The present paper provides a class of quasilinear pseudohyperbolic equation of the existence of classical solutions of the first boundary value problem under some suitable structure conditions.
给出了度量平均点集为—伪对称集的一类充分必要条件。
A class of sufficient and necessary conditions for a metric average point set are put forward as a pseudo—symmetric set.
通过频域和时域分析，指出阶跃信号和伪随机信号是一类既有差别又有内在联系的测试信号。
By analyzing time and frequency domain response we found out that they have some internal connections with each other, although the test signals are different.
另一类与患者有关，有呼吸伪影，心律不齐伪影，冠脉支架伪影及冠脉钙化伪影等。
The other is related to patient, with breathes the artifacts, with arrhythmia the artifacts, the crown arteries support artifacts and the arteries calcification artifacts, etc.
另一类与患者有关，有呼吸伪影，心律不齐伪影，冠脉支架伪影及冠脉钙化伪影等。
The other is related to patient, with breathes the artifacts, with arrhythmia the artifacts, the crown arteries support artifacts and the arteries calcification artifacts, etc.
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