四

Firstly, it is assumed that the coefficient is known, and we work out the general representation of the pseudoparabolic equation given.

第四章以一类特殊的四阶非线性伪抛物型方程为例，讨论了二维空间上一类伪抛物型方程反演系数的反问题。

To commemorate the 18th anniversary of the June 4 massacre, we ask that you join us to dedicate a bunch of white flowers to the Flying French outside the Cultural Centre. A simple and gentle gesture of mourning that speaks a thousand words: respect for those who gave up their lives for the fight of freedom.

为纪念六四事件十八周年，我们仅呼吁各方友好，於六四当日前往位於尖沙咀文化中心外，已故法国艺术家凯撒作品《自由战士》脚下，献上一束白花，透过最简单而意味深长的方式，向十八年前在天安门广场上殉难的人们、和所有曾为自由而牺牲的人们，作出最衷心的致敬。

Any object having a shape similar to a plane geometric figure with four equal sides and four right angles.

一个外形近似于平面几何中的正方形的物体，即有四个相同的边和四个直角。

In this paper, a method, which is based on GPS Time system, is applied to synchronize all GIBs. With GPS receiver's 1PPS output , GIB can compensate for the crystal oscillater's drift. 4. Mathematic Model of UGPS Based on the principle of hyperbola intersection, an iterative algorithm and an analytic algorithm are deduced to resolve system equations with four GIBs observations. It can also be used to resolve the approx coordinate with more than five GIBs'observations.

系统的定位数学模型分析基于双曲线观测的定位模型是系统的基本原理，本文对该数学模型的求解进行了详细分析，对于四枚浮标的系统，本文给出了了迭代算法和解析算法求解的推导，同时对于多余四枚浮标的系统，本文给出了最小二乘算法求解推导。

Results (1) Compared with that of 4-Retro-decoction group and heart failure control group, the activity of Na〓-K〓-ATPase in low- and middle- dosage ginger group showed to be decreased with statistically significant difference. P＜0.05.(2) The activity of Ca〓-ATPase and Mg〓-ATPase in the lower- and middle-dosage ginger group were not statistically different from that of 4-Retro-decoction group and control group, but the activity of Ca〓-ATPase showed an ascending tendency in low-dosage ginger group.

结果 (1)低、中剂量干姜组的Na〓-K〓ATP酶活性明显偏低，与四逆汤组和心衰组比较，差别均具有显著性，P＜0.05；(2)低、中剂量干姜组的Ca〓-ATP酶和Mg〓-ATP酶活性与四逆汤组和心衰对照组比较，无统计学意义，但低剂量干姜组的Ca〓-ATP酶与其它三组相比有升高趋势。

Methods 40pure-breed New-Zealand rabbits were randomly divided into4groups:low（0.028mL/kg）,middle（0.056mL/kg）,high（0.112mL/kg）dosage ginger group and4-Retro-decoction group.The heart failure model of rabbit was established by intravenous administration of20g/L pentobarbital sodium at a certain rate.Oral tube perfusion of ginger extract and4-Retro-decoction were administrated after the establishment of the model.Their hemodynamic changes were detected before and after the model establishment,and at5,10,15,20,30,45,60,90,120,150minutes respectively after the ginger administration by a RM-6004-graph physiological monitor.

以40只纯种新西兰兔为研究对象，随机分为高、中、低剂量干姜组和四逆汤组共4组，用恒速滴注戊巴比妥钠的方法建立兔急性心力衰竭模型，造模成功后，经口插管入胃灌服受试品，用RM-600四道生理仪测定造模前、造模成功时及用药后5min、10min、15min、20min、30min、45min、60min、90min、120min、150min兔的心肌舒缩性能指标，观察各时段指标的变化情况。

This paper is divided in 4 parts. It first puts emphasis on analysis of the reason why the musician Giuseppe Verdi decided to create the tragical image-Violetta; then it deals with the creation of the tragical image from the perspective of musical images. The third part explores the creation of the tragical image through the analysis of the dramatic contradiction. Part four illustrates:thearts innovetion and character of opera LA TRAVIATA.

本文分四部分，第一部分，重在分析音乐家威尔第选择塑造薇奥列塔这个悲剧形象的原因；第二部分，从音乐形象方面分析歌剧《茶花女》的悲剧形象塑造；第三部分从戏剧矛盾冲突音乐分析的角度分析歌剧《茶花女》悲剧形象塑造；第四部分论述歌剧《茶花女》艺术上的革新及特点。

The Epistle, they say, having been written from Rome, where the persecution must have raged in all its horror, we naturally look for clear and indisputable indications of it, but the general theme of the epistle is that the Christians should give no occasion to the charges of the infidels, but that by their exemplary life they should induce them to glorify God (ii, 12, 15; iii, 9, 16; iv, 4); besides, the way of speaking is generally hypothetical (i, 6; iii, 13-14; iv, 14), there being no question of judges, tribunals, prison, tortures, or confiscation.

在书信，他们说，已经书面从罗马，那里的迫害必须有持续的一切恐怖，我们自然期待明确和无可争议的迹象，但在总的主题是书信的是，基督徒应该没有机会收费的异教徒，但通过自己的模范的生活，他们应该促使他们荣耀上帝（二， 12日， 15日；三， 9 ， 16 ；四， 4 ）；另外，说话的方式一般是假设（一， 6 ；三， 13日至14日；四， 14 ），没有问题的法官，法庭，监狱，酷刑，或予以没收。

On 8 April 1940, the 1345-ton British destroyer Glowworm encountered in the North Sea the 10000-ton German cruiser Hipper.

一九四○年四月八日，一千三百四十五吨的英国驱逐舰萤火虫号在北海遇上一万吨的德国巡洋舰希珀号。

4The sequence of the four protein components content from high to low as follows: Globulin content is the highest all of them, the next is Glutelin content and Albumin content, Prolamine content is the lowest all of them.

四种蛋白质组分含量由高到低的排列顺序为：球蛋白、谷蛋白、清蛋白、醇溶蛋白；全蛋白含量及四种蛋白质组分含量在不同品种间存在较大差异。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。