弹性波

First, First term formulae are deduced systematically which describe spherical wave propagation in elastic medium.

首先系统地推导了球面波在弹性介质中传播的首项公式。

The ground response to underground explosion is transformed into the problem about propagation and reflection of spherical dilatation wave in elastic half-space.

将地下爆炸的地表响应转化为弹性半空间内球面膨胀波的传播和反射问题。

The Fourier transfermation about the azimuthal angle and Hankeltransfermation about the radial dirction have been used to turn the basic dis-placement equatioons and constitutive equations under cylindrical coordinatesystem into a system of second order ordinary differential equations in thewavenumber domain,by use of the initial prarameter method to solve differ-ential equations.

利用关于方位角的Fourier变换及关于径向的Hankel变换，将柱坐标系下位移基本方程和本构方程转化为波数域内二阶常微分方程组，利用求解微分方程的初参数法，建立了介质层的传递矩阵，导出了层状弹性半空间在地表作用任意静荷载情形下的解析解。

The relationship between the vibration and the sound radiation of the mechanism was revealed through wave number analysis.

通过对高速弹性机构振动波数谱的分析，揭示了机构振动与声辐射性能的内在关系。

J Calculate the speed of the wave in the elastic chord.

在有弹性的弦里计算波的速度。

Aqua、Butylene Glycol、Dimethicone、Cyclomethicone、Glycerin And Glyceryl Acrylate/Acrylic Acid Copolymer And Propylene Glycol And PVM/MA Copolymer、Hydrolyzed Adansonia Digitata Extract、Commiphora Myrrha Extract、Hydrolyzed Callogen、Carbomer、Triethanolamine、Allantoin、Elastin 、Diazolidinyl Urea、Fragrance .

水、丁二醇、聚二甲基硅氧烷、环聚二甲基硅氧烷、甘油和甘油丙烯酸酯/丙烯酸共聚物和丙二醇和PVM /MA共聚物、水解猴面包树提取物、没药提取物、水解胶原、卡波姆、三乙醇胺、尿囊素、弹性蛋白、双咪唑烷基脲、香精。

Aqua, Sorbitol, PPG-1 PEG-9 Lauryl glycol ether, Hydrolyzed elastin, Hydrolyzed wheat gluten, Hydrolyzed collagen, Hydrolyzed glycosamino-glycans, Humulus lupulus, Propylene glycol, Triethanolamine, Sodium hydroxide, Carbomer, Maris limus extract, Ostrea extract, Imidazolidinyl urea, Parfum, Benzyl salicylate, Coumarin, Alpha isomethyl ionone, Hexyl cinnamal, Buthylphenylmethylpropionate, Linalol, Methylisothiazolinone, Methylchloroisothiazolinone.

水，山梨醇， PPG 公司- 1聚乙二醇- 9十二烷基醇醚，水解弹性蛋白，水解小麦面筋蛋白，水解胶原蛋白水解粘多糖，多聚糖，啤酒花提取物花，丙二醇，三乙醇胺，氢氧化钠，卡波姆，马里斯提取物，牡蛎提取物，咪唑烷基脲，香水，水杨酸苄酯，香豆素，阿尔法 l 紫罗兰酮，己基肉桂醛，丁苯基甲基丙醛，芳樟醇，甲基异噻唑啉酮，甲基氯异塞唑晽酮。

Thing consummation special ZTP and plant activity are extracted fuses , going to adding specially is trifling the factor, has effect specifically for pet skin scraps question, at the same time cutin face to face, taking precautions against the dermitis creation and getting rid of have outstanding effect, Xiu protects pet irritability skin , can prevent skin scraps from coming into being once again and, its fate plain B5 is strengthened the thinking that wealth contains in vitamin nutrition cream by hair elasticity and lustre.

特别的 ZTP 与植物活性提取物的完美融合，特别添加的去屑因子，有效针对宠物皮屑问题，同时对预防皮炎的产生和祛除角质有着突出效果，修护宠物过敏皮肤，并能预防皮屑再次产生，维他命营养精华中富含的维它命原B5更可增强被毛弹性和光泽。用适量温水将爱犬被毛浸湿后，将适量香波涂于全身，并轻轻按摩揉搓5分钟，用清水彻底清洗干净即可。

AIM: To investigate the value of dicrotic phase area of brain admittance loop in the judgment of blood vessel elasticity in patients with hypertension.

目的：探讨脑导纳环重搏波相面积对高血压病患者的血管弹性判定的诊断价值。

Through the above discussment, we can conclude that in the thickness of top coal detection,elastic wave method is effective. If the focal satisfy the requirment of the frequency bnak and we take some measures on the emit and receive equipment and use advanced signal analysis method -wavelet analysis ,we can obtain ideal result .

以上工作表明，应用弹性波方法对顶煤厚度探测是切实可行的，只要震源满足频带要求，发射和接收装置采取相应的措施，再结合先进的信号处理方法—小波分析，煤厚探测是可以取得比较理想的效果的。

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。