查询词典 variation

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。

It is concluded, that the E2 layer is a normal layer, controled purely by solar ultraviolet radiation; the annual variation of the solar height at the time of first ionization of the E2 layer is irregular, whereas this solar height of the F layer has a regular annual variation.

可以确认，E2层是一个純受太阳紫外輻射所控制的正常层次；該层每天开始电离时的太阳高度年变化是沒有規律的，而F层每天开始电离时的太阳高度却具有有規律的年变化。

In auscultation, we concluded that variation of formant frequency and total within-cluster variation : The

目前针对病房与门诊患者疾病徵候与经穴电流值的评估已经更趋一致；望诊方面，目前

Genetic variation in intraspecies of green foxtail from different region of North china is more than that of interspecies Sitlica and S. virids. Cluster show that genetic variation of green foxtail in different region is related to its ecology region.

不同地理来源的青狗尾草之间的遗传差异大于青狗尾草和谷子种间的遗传差异，聚类分析结果显示青狗尾草间的遗传差异同地理区域相关。

Therefore, it keeps the consistency in variation of grayness with traditional spectrogram, and guarantees the continuity of phase display, due to the continuity and recirculation of chromatic variation in the color space.

这样既保持了与传统谱图按灰度变化的一致性，又由于彩色空间色度变化的连续性和圆周重复性，保证了相位表示的连续性。

Experimental study includes the law of flow field variation and variation of water surface in affected zone by the single groyne or twin-groyne. Mathematical modeling includes following the trail of water surface in 2-D and 3-D conditions, model developing, verifying and applying ofthe model as well.

实验研究包括单丁坝及双丁坝条件下丁坝影响区内流场及水面变化规律；数学模拟方面包括二维和三维自由水面追踪及流场数学模型开发、验证和应用。

Comparing the computation results of these four design schemes we get variation of the kinetic energy correction factor near groynes in Panjiatai shoal when water depth is less than the groyne height. The variation characteristics of the kinetic energy correction factor in Panjiatai shoal is different from the experiment results because the effect of groynes in the Panjiatai shoal is simulated by three parameters together.

比较四个方案的计算结果，可以得到潘家台滩绕流流态下丁坝附近动能修正系数的变化情况，与实验进行对比，分析两者产生差异的原因是潘家台滩工程中丁坝对水流的影响由三个参数共同来模拟。

The results showed that ABT can increase the content of geniposidic acid in a long time, the range of variation was more than 9%, but most of the time, it would decrease the contents of chiorogenic acid, total flavonoids and gutta-percha, the range of variation was large too.

结果表明：ABT生根粉处理后，杜仲叶中京尼平武酸的含量在较长时间段内增加，增加幅度超过了9%；绿原酸、总黄酮和杜仲胶的含量减少，减少幅度较大。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。