叠合

How to calculate the synthesis operator is the key problem of controlled illumination prestack depth migration. In this paper the inverse time focusing operator is synthesized based on the traveltime calculation method of finite difference approach, and with this synthesis operator the authors calculate the focusing point controlled illumination prestack depth migration using Fourier finite difference. The test results of Marmousi model show its effectiveness and the great advantage of improving computational efficiency.

进行控制照明叠前深度偏移的关键是合成算子的选择，笔者基于有限差分的走时计算方法合成了逆时聚焦算子，基于该合成算子利用傅里叶有限差分法进行了聚焦点控制照明叠前深度偏移，针对Marmousi模型的试算结果表明了该方法的有效性及其在提高计算效率方面的巨大优势。

Aryl azides are by far the most frequently used photoaffinity probes because they can be easily synthesized, as well as being chemically stable in the dark and highly reactive upon photoirradiation.

与普通的芳基叠氮基团相比，全氟取代的芳基叠氮基团具有更高的光标记效率；而香豆素的叠氮衍生物则同时具有荧光标记能力和光亲合标记能力，具有更广泛的应用潜力。

Institute of Structural Engineering , Hunan University , Changsha 410082, China

国内对混凝土叠合结构的研究始于上世纪50年代。

The total registration process optimally searches those parameters in rigid-body transformation matrix until the sum of squared normal deviation is minimized.

在所有的叠合程序中，主要是透过最佳化搜寻机制，寻找使偏差平方和为最小的刚体转换矩阵参数值。

Convolutions; and something of the miracle of Nature is revealed to me.

圈叠合得那么巧妙，于是我领略到了某种大自然的神奇。

Of a flower, and discover its remarkable convolutions; and something of the miracle of Nature is

绒般的质地，并发现它的花瓣一圈圈叠合得那么巧妙，于是我领略到了某种大自然的神奇。

There is a finality about somethellong that happens at thellos fullmoon eclipses that can't be denied.

这是此次叠合发生在满月所必需的，没有办法抗拒。

The analysis results show that a well homogeneous overlapped Gauss field intensity is gotten with satisfactory utilization ratio of luminous energy.

结果表明，在k=0.540时，叠合的高斯光场可获得相当良好的均匀分布，同时，光能利用率和平均光强为同等条件的高斯光场的1.35倍。

It is a level very hard to achieve, but with his long commitment to traditional Chinese philosophy and arts, ZHONG has achieved his new level of painting over the past years---- symbolic and expressive, free and magnificent. With jujutsu, acrobatics and other social subjects as his painting motifs, he has created, through "imaginative reconstruction" and "meaningless expression", many a coloring image combining fantasy and reality, i.e. many a painting of what he terms the "trace and image".

许多年来，钟孺乾把目光和心力投向尚虚与表意的中国哲学和文艺传统，取柔术杂技为母题，并与社会万象相联系，通过&想象性重构&和&无意味表达&，创造出&幻想&与&现实&叠合的图景，同时让笔彩与形象化生一体，弥漫成一种他之所谓的&迹象&，从而达成一种兼具象征性和表现力的、自在而恢宏的境界。

Taking Jiyang Depression as the study object, many kinds of disciplines were applied synthetically in this thesis, such as, stratigraphy, structural geology, sedimentology, historical geology, geophysics, etc. On the basis of the reconstruction of the denuded thickness and the original thickness, and the study of the developing characteristics of the basin-controlled faults, combined with the study of space-time distribution of the sedimentary facies and the analysis of basin - transfer mechanism and the geodynamics, the prototype basins of each structural stage in Mesozoic were studied and analyzed in detail, moreover, the superimposed relationship of the Mesozoic basin and Cenozoic basin was discussed.

本论文选择济阳坳陷作为研究对象，开展地层学、构造地质学、沉积学、地史学以及地球物理学等多学科综合研究，以地层剥蚀厚度、原始厚度的恢复以及控盆断层发育演化特征的研究为切入点，辅以沉积相的时空展布研究，并结合盆地转型机制、地球动力学背景分析，对济阳坳陷中生代各构造期的盆地原型进行详细解剖和分析，探讨其与新生代盆地的叠合关系。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失