方波

The one order differential model and convolutional model of impedance formula of amplitude versus offset inversion were established. Impedance inversion formula from AVO was derived based on Bayesian framework. Methods of using Huber function as prior model parameter distribution and covariance matrix from well log as constrains were developed. The P-wave impedance, S-wave impedance and density were calculated by the conjugate gradient algorithm.

为此建立了振幅随偏移距变化波阻抗反演公式的一阶差分模型及褶积模型，推导了基于贝叶斯理论的AVO波阻抗反演公式，给出了采用Huber分布作为模型参数的先验分布及测井数据的参数协方差矩阵作为约束条件的实现方法，并利用共轭梯度法计算了纵、横波阻抗及密度。

Apollo was the god of music and poetry.he could stir up all feelings.these feelings are expressed in lofty songs.with 你好s lyre of gold and the sweet accents of 你好s godlike voice heled the choir of the muses at olympus.the pleasant music from 你好s lyre was so exciting that stones marched into their places in rhythmic time and of their own will when he helped poseidonbuild up the walls of troy.on one occasion,invited to acontest by the human musician marsyas,he won and then flayed 你好m to death for 你好s pride.on another occasion,he lost out topan at amusical contest and turned the ears of the judge,king midas,into those of an ass.

阿波罗是音乐神和诗神他可唤起人们倾泻于圣歌中的各类感情在奥林波斯山上，他手拿金质里拉，用悦耳的音调批示缪斯的合唱当他帮助波塞冬制作特洛伊城墙时，里拉奏出的音乐云云动听，乃至石头有节拍地、自动地各就其位有一次他接管常人音乐家马斯亚斯的挑战参加一次竞赛打败对于方后，他将敌手剥皮致死以惩罚他的傲慢自负在另一次音乐比赛中，因输给了潘神，他就将裁判迈尔斯国王的耳朵变成了驴耳朵

Supposition of two vibrations with same frequency and direction, condition generated mechanical wave, dynamic equation of plane harmonic wave.

同方相同频率的两个简谐振动的合成；机械波产生的条件；平面简谐行波的运动学方程。

Week 4 Supposition of two vibrations with same frequency and direction, condition generated mechanical wave, dynamic equation of plane harmonic wave.

第4周 同方相同频率的两个简谐振动的合成；机械波产生的条件；平面简谐行波的运动学方程。

As they approached the Piazza del Popolo, the crowd became more dense, and above the heads of the multitude two objects were visible: the obelisk, surmounted by a cross, which marks the centre of the square, and in front of the obelisk, at the point where the three streets, del Babuino, del Corso, and di Ripetta, meet, the two uprights of the scaffold, between which glittered the curved knife of the mandaia.

当他们接近波波罗广场的时候，人群愈来愈密了，在万头攒动的上空，可以看到两样东西，即方身尖顶的石塔，塔顶上有一个十字架，标明这是广场的中心和耸立在石塔前面，耸立在巴布诺街，高索街，立庇得街三条路的交叉口上的断头台的那两根直柱，在这两根直柱之间，悬挂着一把闪闪发光的弯刀。

Firstly, image is decomposed into two serials, which are predicted and updated by two-order Neville filter on rectangle and quincunx grid by turns.

首先将图像分解为两个序列，用2阶Neville滤波器构造预测和更新算子，对两个序列以矩形栅格和梅花形栅格的格式进行交替预测和更新；再以各个波段的方差作为融合的特征，进行特征级第二代小波加权融合，最后对图像进行第二代小波重构。

The result was that the defending radar operator saw a large cloud of echoes on his radarscope, completely obscuring echoes from the attacking planes.

结果防御方的雷达操作员在显示器上只能看到大片的回波云，完全将攻击飞机的回波淹没。

The high frequency signals and noise signals are first decomposed into three different directions by making use of the 2-dimensional Daubechies wavelet transform to process matrix data with row convolution and line convolution.

利用二维db小波变换对矩阵数据分别进行行卷积和列卷积，把检测数据的高频信号和噪声信号分解在3个不同的方向上，且信号的能量集中在很少的小波系数上。

The high resolution multiazimuthal walkaway VSP method was applied to the accurate prediction of reservoirs in Tahe oil field.

将高分辨率多方位VSP地震方法应用于塔河油田储层描述，实现了上行反射P波和S波精确成像，提高了地震资料及储层预测的分辨率；并建立了含缝洞碳酸盐岩储层的地震反射特征和裂缝发育储层的地震识别方

Made up of three separate tribes, the Aztec alliance acquires its name from the dominant Mexica tribe, known amongst the others as the 'Aztecs'.

在战神威济洛波特利的荣光照耀下，骁勇阿兹台克战士东征西讨，开疆辟土，远达瓦哈卡和特万特佩克，自北部圣路易斯波托西至东南危地马拉，无不播洒著太阳之子的光辉，猛虎战士赫赫威名远震八方。

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。