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Genetic algorithm is the means to provide a generic and robust method for getting the minimum cost form all possible data schema. Taking advantage of GA's self-adaptive and self-adjustable features, this method improves the level of automatic database schema design. 4. Based on XML characters and Chomosky Grammar theory, this dissertation presents X-Grammar and pushdown automaton model to extract structure information from XML data with high performance.

通过人工智能技术中的遗传方法的自适应性和自治性，根据应用需求和系统负载情况，调整数据模式，提高了数据库中模式寻优的自动化程度，为人工智能技术在数据库的应用提供了一个新的切入点。

To Smith's further annoyance, he was ordered to provide a rifle company to guard X Corps command post at Hamhung.

让史密斯感到更为苦恼的是，他接到命令派一个步枪连前往咸兴保卫第10军的司令部。

Let's get her X-rayed.

我们让她去透视一下。

" S$ w+ X; L9 K" N Bunch medium to large, compact, usually shouldered; berry large, round, bright wine-red in color.

束大中型，结构紧凑，通常承担；果实大而圆，明亮的酒红色的。

Mac OS X is a rock-solid system that's beautifully designed. I much prefer it to Linux.

苹果系统是一个完美的坚如磐石的系统，可我还是更喜欢LINUX

Photo Gallery: Olympics Winner's Circle American swimming phenom Mark Spitz, seen here celebrating with his teammates after winning the 4 x 100-meter medley, was the first athlete ever to win seven gold medals in a single Olympics.

意译：奥林匹克运动优胜者的循环。美国人游泳的杰出人才Mark Spitz，看这里他的队友在赢得4×100米的混合泳，是第一位的运动家曾经赢得七枚金牌在一次奥运会。

F+ W$, f( C; x 2) Let's cross your fingers and hope it works.

让我们祈祷好运，并期待祝愿成真吧！

6V;X$W*Pn'S7Od0②The slave system was formally ended by Lincoln's Emancipation Proclamation in 1863 and the Thirteenth Amendment to the Consititution in 1865.the Civil Rights Movement in the 1960s demanded desegregation and equal right

1863年林肯总统的《解放宣言》和1865年的《宪法第13修正案》使奴隶制度正式瓦解。废除种族隔离和人权平等导致了1960年的民权运动。

In reality, it's not for what X-Plane is doing.

当电脑试图用这些矩形的像素点绘制一条斜线的时候，就会产生锯齿，看起来就像楼梯一样）。

You know, it's funny the people who say 'x-ray vision'.

要知道。。。那导致部分人堕落的。。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。