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If you no longer want the table to have a primary key, select the field designate d as the primary key in the top portion of the window, and on the Edit menu, click Primary Key.

如果您不再希望表具有主键，请在窗口的上半部分中选择指定为主键的字段，然后在"编辑"菜单上，单击"主键"。

Is welcomed buying the house , the first key elements is section of an area , second key elements are section of an area , third key element are still section of an area.

值得注意的是，表2和表3中职业所处的位置是动态而非静态的。如煤炭业，今年的表现就不俗，各项指标上涨幅度喜人。

Enhanced keyboard.A computer keyboard modeled after the enhanced keyboard; introduced by IBM for the IBM PC/AT. The 101-key keyboard and the enhanced keyboard are similar in the number and function of their keys; they may differ in the way the keys are laid out, the amount of tactile feedback expressed when a key is pressed, and the shape and feel of the key-caps.

键键盘 在改进型键盘后的另一种计算机键盘模式，由 IBM 为 IBM PC/AT 生产。101 键的键盘在键的数目和功能方面与改进型键盘相似，但是键的布局和按键时表达的触感反馈量，以及键的形状和手感可能不同。

Musical shoe sole contains respectively printed circuit board, batteries volume adjuster and small-sized loudhailer, in shoe all around bend cant still is installing 4 key board switch, ordinal the key that steps on next shoes, can give out ""," come "," rice "," law " noise of enharmonic accord with, children puts on it, when stepping on next key board switch by dance music score, can enjoy the performance of festively singing and dancing.

音乐鞋鞋底分别装有印刷电路板、电池音量调节器与小型扬声器，在鞋子四面倾斜面还安装着四个琴键开关，依次踩下鞋的琴键，便可发出"都"、"来"、"米"、"法"等音符声响，儿童穿上它，按舞曲乐谱踩下琴键开关时，便可欣赏到载歌载舞的表演。

Escape key : A computer key board key that is used to exit a mode or routine, or cancel some function.

换能键：电脑键盘上用来走出一个模式或例行程式或取消一些功能的键。

We are based on Diffie-Hellman key exchange algorithm for key agreement and distributing the group key using multicast for efficiency.

我们以Diffie-Hellman 金钥交换演算法为基础来达成群组金钥协定，并以多播的方式来分配金钥以提高更换金钥的效率。

Some people may think so much good ah, I as far as possible in the META that much key word divides in oneself, such search engine can give him more chances probably, actually such key word does not have real significance at all to your website, overmuch false key word still can be punished certainly likely.

有些人可能会想这样多好啊，我把尽可能多的关键字都分在自己的META中，这样搜索引擎或许会给自己更多的机会，其实这样的关键字对你的网站来说根本没有实际的意义，过多的虚假的关键字有可能还会受到一定的处罚。

Want us not to want to go intentionally only key word of load one's writing with fancy phrases, do not become a few false key word, density of home page key word is in 3%7% is advisable, also do not exceed 10% at most.

只要我们不要故意的去堆砌关键字，不要做一些虚假的关键字，首页关键字密度在3%7%为宜，最多也不要超过10%。

At present, group key management mainly divided into goup key distribution and group key agreement, both of them have their own character and can be used in different applications.

目前已有的组密钥管理协议主要包括组密钥分配协议和组密钥协商协议，总体来说，他们各有优缺点，适用于不同的情况。

Hybrid schemes in a KEM-DEM structure is regarded as the most natural approach to public key encryption with IND-CCA security and practical efficiency. Traditional KEM is realized by public key scheme, which only provides confidentiality security for session key used by DEM. In 2005, combining the idea of signcryption with the KEM-DEM model hybrid encryption, Alexander proposed a signcryption KEM-DEM model hybrid signcryption primitive.

KEM-DEM结构的混合密码体制是获得IND-CCA安全最实际有效的方法，传统的KEM由公钥加密方案实现，仅提供DEM使用的会话密钥的保密性安全。2005年Alexander等人将签密的概念与KEM-DEM结构的混合密码体制相结合，提出了Signcryption KEM-DEM结构的混合签密。

Although translator has turned from being a crystal ball by which the original culture can unrestrainedly penetrate to another crystal ball by which the target culture can freely traverse, the translator's personal embodiment, in the process of cognitive act, are still absent in translation studies. Translators are still subjects without body or simply disembodied subjects.

译者虽然由原语文化可以自由穿透的玻璃球变成了译语文化可以自由穿越的玻璃球，但译者认知过程中的个体体验在翻译研究中依然缺席，译者依然仅仅是一个没有躯体体验的主体。

Chillingly, he claimed our technology is 'not nearly as sophisticated' as theirs and "had they been hostile", he warned 'we would be been gone by now'.

令人毛骨悚然的，他声称我们的技术是'并不那么复杂，像他们一样，和"如果他们敌意"，他警告说，'我们将现在已经过去了。