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Here, the theory and the deducing process of the SEM based on the Legendre polynomial is given. The SEM can get a global diagonal mass matrix, which leads to a very simple explicit time difference scheme and high efficiency. Numerical simulation in the transversely isotropic medium are shown and the results approved that the SEM is a effective method for seismic wave modeling.

文中阐述了基于Legendre多项式的谱元法的理论和推导过程，该方法可以形成全局对角质量矩阵，在时间域使用显式的差分算法，提高运算效率，最后通过横向各向同性介质的数值计算，模拟结果表明该方法是一种有效的数值模拟方法。

The SEM can get a global diagonal mass matrix, which leads to a very simple explicit time difference scheme and high efficiency. Numerical simulation in the transversely isotropic medium are shown and the results approved that the SEM is a effective method for seismic wave modeling.

文中阐述了基于Legendre多项式的谱元法的理论和推导过程，该方法可以形成全局对角质量矩阵，在时间域使用显式的差分算法，提高运算效率，最后通过横向各向同性介质的数值计算，模拟结果表明该方法是一种有效的数值模拟方法。

The 24 pieces of costly hexagonal reflection mirrors are the core components of the most powerful spectrum survey telescope, and each of them has a 1.1 meter diagonal conjugate and 25 mm thickness. It adopts the mirror face automatically splitting joint and transforming technology which is created by Chinese and unique in the world.

24块造价昂贵的六边形反射镜，每块对角径1.1米、厚25毫米的镜面，是世界上最强大光谱巡天望远镜的核心组件，采用的是中国人开创、全球独一无二的镜面自动拼接兼具变形高难度技术。

While the second order full extension ETG finite element method is applied to solve the problems concerned with natural convection and forced convection, different discretization schemes are deduced respectively. Then the equations are solved by using the technology of variable bandwidth and mass diagonal matrix.

详细推导了应用二阶全展开ETG有限元法求解自然对流和强制对流问题时的有限元列式，并应用压力校正法与质量矩阵对角化及变带宽压缩存储技术对方程进行求解。

Avinguda Diagonal is the forename of one of Barcelona's most important avenues.

的Avinguda对角是用的名字一个巴塞罗那的最重要途径。

By analyzing the GIP algorithm deeply, the diagonal loading is used to improve the GIP detection performance, and for DL-GIP, the key is to select the loading level, and the selecting method is advanced particularly.

将对角加载用于改善广义内积检测算法的检测性能。对于DL-GIP算法的关键是选择加载电平，给出了具体的选择方法。

Behind him I could see all the way down the narrow garden at the back of the house to the diagonal row of trees skirting the railway line-they are gone now, those trees, cut down to make way for a row of pastel-coloured bungalows like dolls' houses-and beyond, even, inland, to where the fields rose and there were cows, and tiny bright bursts of yellow that were gorse bushes, and a solitary distant spire, and then the sky, with scrolled white clouds.

在他的身后，沿着剧院后狭长的花园我能看到对角线排列的树那边的铁路线——现在没有了，那些树被砍倒了制作为那些蜡笔彩色的洋娃娃一般的小平房，甚至在内陆，在那儿有玫瑰园和奶牛，也有金雀花灌木黄色微亮的发光，一座孤单遥远的尖塔，然后就是天空，天空中卷着白色的云。

A well-timed diagonal run across the penalty area after 13 minutes was picked out by Cristiano Ronaldo only for Rooney to drag a tame shot into the arms of Hahnemann.

他时常被隔离在前方，只能靠自己创造些机会。13分钟他接到罗纳尔多的传球斜插禁区，但是射门无力被守门员抱住。

A cross with equal arms and a diagonal cross, or saltire, were the most traditional heraldic forms.

跨平等的武器和对角线交叉，或saltire ，是最传统的纹章的形式。

So far, the yield of hermetical welding for large cavity devices (perimeter: 150 ～ 200 mm, diagonal:≤70 mm) reaches 93%?

目前，大腔体器件(150～200mm周长，对角线≤70mm)气密性焊接的成品率已达到93%。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。