| 1. | The dissipation value of pore water pressure does not change along the depth . the influence depth c an reach 4 ~ 5m below the pvds 孔隙水压力的消散程度沿深度方向基本不变,呈矩形分布,负压影响深度可达塑排底下4 5m 。 |
| 2. | The non - uniform potential in the channel is concerned with an arbitrary depth so that the analytical solutions agree well with numerical ones 该解析解考虑了任意深度情况下沟道中深度方向上电势的不均匀分布,结果与数值模拟吻合。 |
| 3. | The analytical solutions to 1d schr ? dinger equation ( in depth direction ) in double - gate ( dg ) mosfets are derived to calculate electron density and threshold voltage 摘要推导了双栅mosfet器件在深度方向上薛定谔方程的解析解以求得电子密度和阈电压。 |
| 4. | Abstract : an evaluation technique , based on ultrasonic characteristics in time domain , by which several cscan images in depths of a material tested can be obtained by once - through scanning , has been presented 文摘:介绍一种基于超声传播时域特性的深度方向超声c扫描成象检测技术,一次扫描可以同时获取被测材料结构内部若干层的扫描检测图象。 |
| 5. | By placing different rare earth elements ( ree ) in different soil depth and different section across one slope in an indoor plot , one simulated rainfall was applied to study the spatial - temporal process both of depth and section erosion across one slope plot simultaneously 摘要室内交叉布设不同的稀土氧化物,通过人工模拟次降雨,在同一试验条件下,对坡面侵蚀沿顺坡方向和深度方向的演变过程同时展开研究。 |
| 6. | Prestack migration method , based on wave motion equation , is also developed for receiver function , and compared with ray method . both p - to - s conversion wave and direct p phase contained in receiver function are migrated and imaged by reverse - time migration for data gather including all receiver functions recorded in all seismological stations for one event , and imaging profile is finally obtained by stacking for all events 本文还在接收函数射线反投影叠加成像的基础上,提出了一种基于波动方程的接收函数叠前偏移成像方法,将同一事件接收函数中的转换波和直达p波震相以各自的速度向深度方向逆时延拓成像,并通过不同慢度接收函数的叠加,得到最终的偏移成像结果。 |
| 7. | According to finite element segmentation principle , by combining test with observation , the author has measured the air streamline and speed distribution of burning equipment in dally situation , which provides some guide for research of air field in hearth on cold and hot conditions . and the law is found of air speed distribution by measuring its speed and distribution of upper and lower deck on cold condition , thus it lays the foundation for analysis on hot condition . under four burning states , we measure the air speed in single , double - deck , and find out its corresponding distribution law 5 .根据有限元分割原理布置测点,采用降温方法,用k五江9106等仪器分别测出单双炉排燃烧方式4种不同工况下,该燃烧设备炉膛内coz 、 02 、 co气体浓度,并找到了随炉膛高度方向及深度方向变化规律;从燃烧原理分析评价了2种燃烧方式炉膛内coz 、 02 、 co气体浓度场分布特点及相应燃料层内干燥、干馏、氧化、还原、灰渣层厚度,肯定了双层炉排燃烧方式炉膛中c02 、 02 、 co气体浓度场分布合理性,从燃烧理论找出了最佳浓度场分布状态及燃料层内各反应层厚度。 |
| 8. | The contents and original points of view are as follows : 1 . the complete depth - averaged tubulence model is adopted to compare with the tradional depth - averaged model . the non - uniformity of velocity in z axis is considered in the former . the rigid - lid assumption , which was adopted for long time , is discarded , while the transpot equation of kinetic energy of dispersion is introduced . the 2d term ' s distribution of space - time is calculated 论文包含的主要内容及创新点有: 1 、引进了完全深度平均紊流模型,与传统深度平均紊流模型相比,该模型计入了流速在深度方向分布不均匀的影响;去掉了深度平均紊流计算中长期采用的“刚盖假定” ,同时模型通过引进离散动能的输运方程,计算了二维离散项的时空分布。 |
| 9. | Abstract : propagation characteristics of r wave in a pavement structures are analysed in this paper . based on the propagation characteristics of r wave , the horizontal propagation wave is simulated by using r wave , the vertical propagation wave is also simulated by using body wave in calculating dynamic response of pavement structures . the availability and accuracy of dispersion curves measured by sasw in pavement structures is analysed by using the presented method used to calculate dynamic response 文摘:利用有限单元法分析了道路结构的r面波传播特性:在深度方向上衰减较慢,传播较深,波动性大.提出了在道路结构动力响应计算中,利用面波来模拟水平向传播波,利用体波来模拟竖直向传播波.通过算例来验证该方法的可靠性和精确性,并利用这一动力响应计算方法分析了道路结构表面波测试中所获弥散曲线的可靠性 |
| 10. | In solving the helmholtz equation in the acoustical waveguides with a curved bottom , slow convergence may occurs when the linear local orthogonal transformation is adopted . in this paper , a class of nonlinear local orthogonal transformations ( nlot ) is proposed . it is an approach to improve the slow convergence mentioned above 本文尝试通过在深度方向选取非线性局部正交变换,将曲底求解区域化为平坦求解区域,然后求解helmholtz方程的办法,来改善用线性(深度方向)局部正交变换时,步进求解时会出现的局部收敛慢的问题。 |