查询词典 shock wave

Objective:To compare the efficacy and the safety of ureteroscopic pneumatic lithotripsy and extracorporeal shock wave lithotripsy in treatment of ureteral calculus,in order to choose the right program for urologist.

随着科学技术的发展，近20～30年来ESWL和URS相继应用于临床治疗泌尿系结石，并取得了显著的成果，现在临床已基本取代了传统的开放性手术。

Shock Wave turns you upside down a further three times and every one is a winner.

余下的旅程也不轻松，"冲击波"将再把你头脚颠倒翻转三次，每一次都会让你满意。

Theoretical study on the influence of the overlay on the pressure of laser shock wave in photo mechanics .

约束层对激光驱动冲击波压力影响机理的理论研究。

This a shock wave theory on the source code, complete functions, parameters can study in detail, please do not for commercial purposes.

这是一个关于冲击波原理的源码，功能齐全，可供学习参详，请不要用于商业用途。

The experment results show that the velocity of shock wave approximate equals tothe sound speed of water.

实验结果表明，冲击波的传播速度约等于水中声速。

Detonation is propagation of a combustion-driven shock wave at or above the speed of sound.

爆轰是一种以冲击波为特征，以超音速传播的爆炸。

Shock wave ; trap in prediction ; buffer operator

冲击波；预测陷阱；缓冲算子

Objective To investigate the kidney, ureteral calculi with extracorporeal shock wave treatment.

目的 探讨肾及输尿管结石体外冲击波的治疗效果。

Besides, we also discussed the instability of shock wave, the differences between thermal model and non-thermal model, chromospheric cendensation and comparisons with the observations.

文中并就环顶激波的不稳定性、热模型和非热模型的大气演化差异、热模型下色球加热的可能性、色球压缩区的性质、以及与其它模型相比较等方面进行了讨论。

The main characteristics include: the quiet Sun corona has a rapid response to the flare heating, within 2 second the corona temperature increases nearly one order of magnitude, but later such increase becomes very slowly; the downward velocity at early stage of impulsive phase is too small to be negnected; chromospheric evaporation made by conduction shows some intensely, the maximum evaporated velocity may be as large as 1000 km/s; the chromospheric condensation appears just when the chromospheric evaporation takes place and its place always coincide with that of transition region in the early stage; the maximum of chromospheric condensation occurs also in the early stage of impulsive phase, at which the density in condensation may be larger two order of magnitude than that of surround and the downward velocity may be as large as 100 km/s; after the maximum of chromospheric condensation, its strongth decreases gradually but its width becomes greater with time and have a tendency to transport into deep chromosphere; the front of chromospheric condensation heats atmosphere obviously and the temperature in the chromospheric condensation is higher than the original case; the downware velocity of transition region may be greater than 100 km/s at the early stage; when the evaporated material collide at the top of loop, the densityand the presure there increase rapidly, which result in the formation of a shock wave; and so on.

在改善色球辐射损失和精确分辨过渡区的基础上，通过联立求解连续性方程、动量方程和能量方程，构造了一维磁限制性耀斑环在热沉积作用下的大气动力学模型，获得了耀斑热模型下脉冲相早期较为细致的大气演化理论图象，其主要特征是：耀斑对宁静日冕的加热相当迅速，仅2秒钟日冕温度增加即达一个量级，之后日冕温度增加缓慢；脉冲相早期日冕向下速度很小，几乎可以忽略，热传导驱动色球蒸发，其过程较为激烈，蒸发极大速度可达到1000km/s；色球压缩区与色球蒸发几乎同时形成，且在早期其位置总是与过渡区位置重合；色球压缩极大发生在脉冲相早期，其时密度可高于周围约2个量级，向下速度可超过100km/s；色球压缩极大后，其强度逐渐减弱，但宽度明显增大，且渐渐脱离过渡区往色球传播；压缩区内物质温度要高于原先的大气温度；过渡区下降在脉冲相早期相当迅速，可超过100km/s；当蒸发物质在环顶高速相碰时，环顶的密度、压力迅速增大，且温度也有所增加，导致形成激波，其波面以每秒上百公里的速度自环顶向下传播；在脉冲相前期，日冕软x辐射对色球的加热作用可以忽略；等。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。