查询词典 variation

The 1-4 order variation law of frequency, energy and distance of MS events before destabilizing can display the change rule of MS events. According to the variation law of the difference of frequency, energy and distance of micro seismic events before destabilizing, the fracture of rock mass can be precisely predicted. This is of great importance for safety of colliery.

微地震事件的距离、能量、频数的一到四阶差分均能够显示微地震事件的变化规律，根据未失稳岩体微震事件距离、频数、能量差分变化规律，能够准确地利用微震监测技术预报岩体破裂，这对于采用微地震监测技术解决矿山井下岩体破坏失稳预报具有重要指导意义。

Its variation characteristics before earthquakes are found,meanwhile the factors which will affect the variation of earth tide are analyzed,which can be taken as references for removing interferes and improving accuracy of earthquake prediction.

月球和太阳对地球的引力不但可以引起地球表面流体的潮汐，还能引起地球固体部分的周期性形变。到目前为止，在引起固体地球形变的种种因素例如冰雪和海水的负荷、大陆漂移、岩石层的构造运动

The analysis of morphological variation is the one of basic methods that identify ecotype differentiation and genetic variation study.

形态差异分析是确定生态型分化和研究遗传变异的基本手段之一。

The distribution and the variation of the pre-stressed effective quantities in the cross section of the beam are comprehensively analyzed by the FEA along with the variation of the span numbers, span length and linear rigidity ratio of beam to column, wherefore the effect factors and the specific conclusions of lateral restraints on the pre-stressed formation in the concrete beam are drawn.

本文以竖向支承构件有一定侧向刚度的预应力混凝土框架结构为研究对象，分析了框架梁受到柱的侧向约束时的受力机理，并运用有限元数值模拟计算方法全面分析了随着梁柱线刚度比、跨度、跨数等诸多因素的变化，框架梁中预应力有效量的分布和变化情况，得到了侧向约束对框架梁建立预压应力的影响因素和具体结论。

In this problem, the main difficulty is that the variation of border electric potential is not sensitive to the variation of conductivity in the field. So far, there is not an effective method to solve the problem.

在低频电流场逆问题的计算中，最大的问题在于边界电位值的变化对场域内部电导率的变化不敏感，到目前为此，对此问题还没有一个公认的有效的解决办法。

To understand the hyperbolic motion of the probe and give necessary orbit information not only the discrete positions to both ground-base or satellite autonomy device, we studied the variation of hyperbolic orbit and gave the variation equations like that of elliptic orbit.

这段轨道相比其它段虽然很短，但却是实现最终探测目标的关键弧段。为了更好地了解探测器的在这一关键弧段的运行状态，给地面测控系统或是星上自主设备提供必要的轨道信息，而不仅仅是探测器在一些孤立点上的位置和速度，有必要对双曲线轨道及其变化特征进行研究，给出类似于椭圆轨道及其变化的一些基本规律。

objective:to guide elder chronic heart failure patients for proper medication monitoring and improve self-nursing ability by monitoring the variation of avoirdupois,urine specific gravity,24-hour emiction amount and heart function variation after diuresis therapy and making relevant analysis.

目的：探讨监测患者的体重、尿比重、24小时尿量和利尿治疗后心功能变化的相关性。

Aimming at the problem of the erosion of parts of seacoast after the variation of flow and sediment in the Yellow River estuary,we research on the relationship between the epeirogenesis of seacoast and the variation of flow and sediment using the methods of field data analyses and theoretical study.

采用实测资料分析和理论探讨的方法，研究了黄河口海岸造陆与水沙过程变异的关系。

The main problems researched in the dissertation and achievements are as follows: The dissertation explains the science background and the theoretical and actual meaning of the task. The progress and the problems of the flow imaging technique are briefly explained. The advantages of electrical capacitance tomography are discussed. The paper discusses the formation and operating principle of ECT, and builds up the definite mathematical model by detail theoretical analyse, and establishes the Finite Element Model of the system by changing the finite boundary value problem of ECT into equivalence variation problem according to variation principle. On the basis of the FEM of the system, the paper builds the finite element model of the capacitance sensitivity field distribution and programs its finite element simulation software and proves the validity of the FEM of the ECT from different aspects. With the FEM and the qualitative analyse of the effect of each structural parameter of the capacitance transducer on its capability, this paper optimizes the structural parameters of the capacitance transducer, and obviously improves its capability. The compare of the simulated result with the static experimental result shows that the error of them is less than 0.9%.

其主要研究内容包括：阐述课题研究的学术背景及其理论与实际意义，概括总结出流动层析成像技术的发展现状和存在的问题，指出电容层析成像技术的优点；讨论电容层析成像系统的组成及工作原理，进行详尽的理论分析，以变分原理为基础，将ECT的有限元边值问题转换为等价的变分问题，从而建立系统的有限元模型；在系统有限元模型的基础上，建立敏感场的数学模型，编制有限元的仿真软件，并从不同角度证明电容层析成像系统有限元模型的正确性；利用有限元模型，定性地分析电容传感器各结构参数对其性能的影响，并对传感器结构参数进行优化设计，使其性能得到明显的改善。8电极ECT系统的仿真和静态实验结果的比较表明，它们之间的相对误差小于0。

The relation between the eastward propagation of the ocean temperature anomalies and the thermocline variation along the equator tells that the temperature variation at thermocline lags behind the eastward propagation during which the EUC plays an important role.

由WPWP 异常海温沿赤道东传过程和温跃层变化之间的关系可知，温跃层变化滞后于WPWP 区域东传的异常海温，在WPWP 区域异常海温东传过程中，赤道潜流起了重要作用。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。