弹性的

In this paper, on the base of paraxial approximations, we present a set of absorbing boundary conditions of 3D elastic wave equations and apply to the 3D elastic wave numerical modeling in isotropic medium.

本文基於傍轴近似法提出了计算三维弹性波方程的吸收边界条件公式，表示了各边界面、边棱和角点处波场所满足的单程波方程，并在三维弹性波数值模拟中进行了应用。

An analytic expression for the acoustic pressure in farfield are then obtained.

考虑弹性结构、可压缩流体和粘弹性消声瓦在交界面上的相互作用，然后给出了远场声压的解析表达式。

Based on two-dimensional elastic wave equation and adopts the well logs as constraint condition, a new imaging method of crosswell seismic data-elastic wave equation inversion and imaging with the well logs constraint is given by using adjoint theory of distribution-parameter control system.

基于二维弹性波动方程，利用分布参数控制系统的伴随理论，采用测井资料作为约束条件，本文给出了一种井间地震资料速度成像的新方法——井间测井约束弹性波动方程反演成像。

The secret to Ellgy h 2 o is two unique ingredients: Anti-TEWL acts like a "water lock" to seal in essential moisture, while DPHP helps prevent enzymatic breakdown of elastin, which also helps prevent premature ageing of the skin.

其独特的 Anti - TEWL 锁水因子，能有效发挥「锁水」功能，防止水份经角质层失，将水份因子锁紧於肌肤之内。此外，优姿 h 2 o 亦含有 DPHP，能有效地防止弹性蛋白纤维被酵素分解，保持肌肤弹性，回青春。

Tangshan 10 years for the metallurgical and mining machinery manufacturer, Tang steel production specifications sintering machine products supporting parts, there are all kinds of sintering machine's main drive transmission, flexible, transmission parts, the torque coupling, security coupling , Security devices, roller fabrics, elastic pull bar, flexible poles, torque-device, the second envelope worm gear box and vice, Touwei seal and various cold rolling mill equipment and accessories saw, roller Production of special equipment.

十多年来为唐山冶金矿山机械厂、唐钢生产各种规格烧结机产品配套部件，主要有各种烧结机的主驱动传动、柔性传动装置部件、定扭矩联轴器、安全联轴器、安全保护装置、辊式布料器、弹性拉压杆、弹性支杆、扭力杆装置、二次包络蜗轮副及箱体、头尾密封装置和各种轧机设备配件及冷锯、托辊生产专用设备。

The reticulated vessel which has large cavity has thicker wall due to more elastic fibers and more smooth muscles and its endothelium is cuboidal epithelium which has rotundity karyons. But the reticulated vessel which has small cavity has thinner wall due to less elastic fibers and less smooth muscles and its endothelial cells are flat epithelial cells which have long-shuttle-shaped karyons. In some regions, the ducts are very small in diameter and thin of wall, and they become blood sinus in the end.

管腔大者，管壁厚，弹性纤维、平滑肌纤维多，内膜靠腔面内皮细胞多成立方状，细胞核端位近圆形；管腔小者，管壁薄，弹性纤维、平滑肌纤维少，内皮细胞扁平、排列稀疏，胞核长梭形；一些区域管径极小，管壁极薄，成为开放的血窦，只允许一个血细胞通过。

As same as the above-mentioned reason, because theconditions at the inside straight boundary of the binarycomposite material can not be easily satisfied, here, anelastic circular inclusion with large radius is used to replacethe upper half space of the binary composite material, so the〓mary binary composite mater ial problem can be changed〓the scattering problem of a circular elastic inclusion andto the scattering problem of a circular eastic inclusion and〓circular cavity in an infinite space to the steady incident〓wave.

与前面两个问题的理由一样，同样，由于问题中双质复合材料的内部直边界上的边界条件不易解析满足，为此，本文采用了一个半径很大的弹性实夹杂来代替问题中双质复合材料的上半空间部分，而将原来的双质复合材料问题转化成了无限大空间中一圆形弹性夹杂和一圆孔对稳态P波的共同散射问题，根据该问题的特点写出了弹性夹杂内外波场中波函数的一般形式解，利用该问题中夹杂和圆孔处的位移和应力的连续条件，并采用复数傅立叶级数展开技术将其化为一个仅包含问题波函数中未知系数的无穷线性代数方程组，在满足一定计算精度的前提下，通过有限项截断进行近似求解，进而讨论了双质复合材料中圆孔边界处的动应力集中系数随不同入射角、圆孔的不同位置、以及入射波的不同无量纲波数的变化和分布情况。

Elasticity is a popular tool among empiricists because it is independent of units and thus simplifies data analysis.

弹性作为一个工具在在经验主义论者很流行，因为弹性可以摆脱单位的干扰简化数据分析。

It can significantly raise rats' bone structural mechanical intensity and improve bone microstructure: TBS%, FS%, MWT and MR notably increased while FRS% decreased obviously.

铸骨复方能明显增大OP大鼠骨组织的最大载荷，弹性载荷，弹性桡度和能量吸收，增强其骨结构力学强度。

OP model rats' bone mechanical intensity descent and the rate of fracture ascended accompanied with destructive bone microstructure: TBS% and MWT obviously reduced while FRS% raised remarkably.

OP大鼠骨组织的最大载荷、弹性载荷、弹性桡度和能量吸收均显著降低，骨组织结构力学强度下降，骨折发生率升高。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。