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In this paper an algorithm of finite element modelling is discussed for elastic wave propagating in two dimensional media. Two analytical formulas of the initial motion and wave form of P wave are derived in time domain for a point force source directing vertically down as a function of time with a bell shape.

本文讨论了二维介质中弹性波有限元模拟的一种方法；导出了二维无界空间中集中力点源的理论初动表达式和位移波形表达式，并和相似情况下的有限元结果进行了比较；对用有限元方法算得的几个中小模型的节点位移进行了分析。

When left when the test-drive after repair in shop main engine is adding this ship to 540r/min, supercharger occurrence asthma brace up phenomenon, rotate speed lifts slightly again, noise shakes very big, smoke evacuation temperature is normal, hair of on the high side of temperature of air inlet duct is very hot, as good as of smoke evacuation smoke constant, supercharger rotor rotate speed and the rotate speed of right leader supercharger that work normally comparative. 2 breakdown analyse this model diesel engine supercharger breathes heavily brace up the reason has the following sides. Bearing of 1 supercharger rotor damages, bring about on the low side of supercharger rotor rotate speed or wave motion, make inadequacy of compressor part air feed and diesel engine and its demand do not match, bring about air current not to stabilize generation to breathe heavily brace up. 2 diesel engine offers oil, match gas to time forbid, match gas, draw well time and disorder, bring about supercharger to breathe heavily brace up. 3 supercharger nozzle jams, cause smoke evacuation not free, circumfluence of exhaust stroke waste gas, enter jackknife of new energy of life with the below one stroke that take energy of life, produce air current to hit generation to breathe heavily brace up. Canal of 4 smoke evacuation jams, smoke evacuation not free, bring about waste gas circumfluence, hit generation of new energy of life to breathe heavily brace up. 5 jams into gas mouth, enter gas inadequacy, generation breathes heavily brace up. 3 trouble removal are based on above analysis, adopt the following measure to remove trouble.

该舰在厂修后试车时左主机在加至540r/min时，增压器出现喘振现象，转速再略升高，声响震动很大，排烟温度正常，进气管温度偏高发烫，排烟烟色无异常，增压器转子转速和正常工作的右主机增压器转速相当。2故障分析该型柴油机增压器喘振的原因有以下几个方面。1增压器转子轴承损坏，导致增压器转子转速偏低或波动，使得压气机部分供气不足和柴油机及其需求不匹配，导致气流不稳定产生喘振。2柴油机供油、配气定时不准，配气、发火定时紊乱，导致增压器喘振。3增压器喷嘴堵塞，导致排烟不畅，排气冲程废气回流，和下一进气冲程进新气重叠，发生气流冲撞产生喘振。4排烟管堵塞，排烟不畅，导致废气回流，冲撞新气产生喘振。5进气口堵塞，进气不足，产生喘振。3故障排除基于以上分析，采取以下办法排除故障。

One day I wrote her name upon the strand, But came the waves and washed it away; Agene I wrote it with a second hand, But came the type, and made my panes his pray.

那天海滩上，书写她名字波浪几冲击，刷洗无痕迹我换另一手，再次又书写海潮涨又退，掳我苦痛去。。。。。。

But Russian social protests remain mostly atomised, posing little real threat to the Kremlin.

但是在俄国，多数抗议都遭粉碎，对克里姆林宫几无任何威胁。

Heels to Heaven, an a cappella group at the University of North Carolina-Chapel Hill, needed to add a few baritones and basses as the 1996-97 school year opened.

奔向天堂'是北卡罗来纳一查用尔希尔大学里的一个无伴奏合唱团，在1996—1997学年开始时，这个团需要增加几名男中音和男低音团员。

A baritone in excellent voice.Heels to Heaven, an a cappella group at the University of North Carolina-Chapel Hill, needed to add a few baritones and basses as the 1996-97 school year opened.

奔向天堂'是北卡罗来纳一查用尔希尔大学里的一个无伴奏合唱团，在1996—1997学年开始时，这个团需要增加几名男中音和男低音团员。

As soon as unites on ~ the mouth and the lower mandible bumps, as soon as the cerebrum thought that a mouth saying, the words and expressions comes out ~ we to live the aspects to have these people, the motion truly is the followed has big time difference ~ even is said a set made set of ~ to cause today's this aspect ~ limitation to have ~ in any country I not to be able to say did not have ~ to say others had not believed ~ kept on proclaiming for the people serves, that do not be affectedly virtuous, that did not want the ambiguity standard, let the human think that gastric disorder ~ did lets the human sleep the ~~ unity to exceed in all ~ other biospheres also to exist thisPerhaps as soon as the phenomenon, I cannot say any ~~~ to be mad that the cry shouted the ~~ confidence to want, should have, also hoped that our decision-making strata could complete these the ~~ final welfare not to have several spots to say the utopia came ~ this somewhat to be out of touch with reality, who ignorant will somewhat making be ~ illiterate not, the populace got up, wake first are pat with the board brick are your ~ China progress the ~ China to go forward the ~ world in the change, all were such gratifying, but the unorthodox article, the human thought that Yan was not generalYan ~ 'thanks cooperates ~ Battlefield Market diplomacy field Yard Living conditions ~ all has these phenomenon ~ sunlight club to welcome everybody to welcome all corners of the country the friend presence to instruct ~ to leave behind signature ~~ to thank cooperates the ~ sunlight hot line:+086 13611012712 Abundant host: Yang Haijun

团结~上嘴与下嘴一碰，大脑一想，嘴吧一说，词语就出来~我们生活中的方方面面都有这些人，行动确实是跟随有着很大的时间差~甚至是说一套做一套~造成了今天的这个局面~局限性在任何国家都有~我不能说没有~说没有别人也不相信~口口声声为人民服务，那就不要道貌岸然，那就不要双重性的标准，让人觉得反胃~做的让人睡大觉~~团结胜过一切~其它生物圈里也存在这一现象，我不能说什么~也许吧~~一气鸣呼了~~信心还是要的，还是应该有的，也希望我们的决策层能将这些做好~~最后福利不要有几个点就说大同世界来了~这有些闭目塞听，有些愚昧的做为~愚民谁不会，还是民众起来，醒来第一个就是用板砖拍的就是你~中国进步了~中国前进了~世界在变化，一切的一切都是那么的让人欣慰，但是不入流的文章，让人觉得琰不是一般的琰~'谢谢合作~战场商场外交场工作场生活环境~都无一不有这些现象~阳光俱乐部欢迎大家欢迎五湖四海的朋友光临指导~留下印迹~~谢谢合作~阳光热线：+086 13611012712 博主：杨海军

Range about several decimeters to more than one meter,tag dependent,elaborately design,portable,without external accessory,don't need to worry for the damage by occasionally hit,can read four protocal's tag and also can read barcode,suppor WIFI and GPRS.

距离从几十厘米到一米多，依标签尺寸，性能而异，精巧型设计，轻便，无外部附件，让您不用担心无意的碰撞造成对设备的损坏，可读写四种协议的标签以及同时读取条码，支持WIFI，GPRS

The wicked Jason sent from Jerusalem sinful men to carry three hundred didrachmas of silver for the sacrifice of Hercules; but the bearers thereof de- sired it might not be bestowed on the sacrifices, because it was not necessary, but might be deputed for other charges.

无廉耻的雅松派了几个入安提约基雅籍的人，代表耶路撒冷去作观察员，又叫他们带三百银钱去祭献赫辣克肋神。但是带钱的人以为用这些钱购办祭物不甚相宜，所以留下作了别的费用。

A few dingy olives and stunted fig-trees struggled hard for existence, but their withered dusty foliage abundantly proved how unequal was the conflict. Between these sickly shrubs grew a scanty supply of garlic, tomatoes, and eschalots

在这片土地上，即这个花园里，北纬三十度的灼热的阳光的猛晒之下，有几棵无精打采的橄榄树和发育不健全的无花果树，它们那萎谢的叶子上盖满了灰尘。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！