查询词典 elastic wave

Horizontal well ; deviated well ; vector finite element method ; induction logging ; electromagnetic wave logging

吉林大学；吕伟国水平井；斜井；矢量有限元；感应测井；电磁波测井

But when fireplug because of financial seismic sea wave also must fasten when, chinese mainland " faucet " inereasingly important.

但是当消防栓因为金融海啸也不得不拴紧的时候，中国的本土"水龙头"益发重要。

The rules of the propagating behavior of stress wave and the phenomena of stress concentration have been analysed. The crack rules of the firing pin have been studied and corresponding improvement methods have been proposed.

分析了击针受撞击时应力波传播的规律和应力集中现象，揭示了击针断裂的规律并从理论上和实践上给出了改进方法。

At first, using paraxial approximation method, the orthogonal vector wave functions in the quasi-optical cavity are deduced.

它是涉及到器件、电磁场理论、天线理论和计算技术等方面的一项综合技术。

A formula of the frequency change has been deduced from the wave equation to the first order approximation.

从波动方程出发，导出频率改变的一级近似公式。

The first order absorption boundary condition is applied to the outside boundary, which can avoid the error caused by the plane wave assumption.

在外边界上统一应用适合于人工源的一阶吸收边界条件来形成边值问题，可减小基于平面波假设造成的人为截断边界的影响。

For investigating the performance of our method, it has been evaluated to simulate a uniform segment of rectangular waveguide. The more lower fictitious return wave loss, which is lower -10 dB than the one yielded from the first order absorbing boundary condition, is illustrated in our method.

通过对一段均匀直波导的计算，验证该算法比使用一阶吸收边界条件的时域有限元法，虚假剩余反射回波平均要低10dB以上，达到了工程计算的要求。

At first, basing on the boundary value problem concerned with fluid-composite structure interaction and characteristic of acoustic wave radiation, a generalized Hamilton variational principle is derived, and the equations of motion based on the finite element method is also derived.

首先，从复合结构与流体相互作用问题的有关混合边值问题出发，针对声波辐射特点，推导了一种广义形式的Hamilton原理及有限元形式的运动方程。

Rigorous first order vector couple-wave theory of planar grating are expanded to more complicated surface-relief grating case.

从计算结果可以看出：在特定的条件下，光栅可以达到非常高的衍射效率，理论上接近100％。

Tumbling flow is appeared in this fishway which produces wave surge and continues to flow downward and may causes serious damage due to its behaviour of periodic tumbling action.

在这种鱼道中出现的滚动流将产生波涌，并继续向下传播，而且它的周期性滚动可能会严重危害鱼道。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。