查询词典 characterization

Due to the self-similarity and burst of the traffic, the traditional models based on the Poisson distribution are stale in the characterization of network traffic.

近年来许多研究表明，网络业务本质是多分形的，呈现出自相似性与突发性，传统的基于泊松分布的模型不再适用。

Purpose To provide a basis for NMR characterization of polypeptide compounds.

目的 为多肽类化合物的NMR解析提供理论基础和方法学依据。

In fact, we present the characterization of multiscaling functions and multiwavelets with the desired symmetry in terms of matrix filter and polyphase matrix.

我们表明这种矩阵的扩充总是可解的并给求解这种仿酉矩阵的对称扩充的计算方法。

The design, implementation, and characterization of an image-rejection double quadrature conversion mixer based on RC asymmetric polyphase filters are presented.

本文介绍了一种基于阻容多相滤波器的双正交镜像抑制混频的设计、实现和测试。

The characterization of planar waveguides fabricated in X-cut LiNbO_3 by proton exchange and the post annealing is studied.

质子交换技术是制作高折射率、低损耗、具有偏振特征的LiNbO3光波导器件的非常成熟的方法[1]。

In this study, Chitosan-Poly complex nanoparticles were prepared by template polymerization of acrylic acid in the chitosan solution. The preparation and characterization of CS-PAA nanoparticles including the yields of the nanoparticles, FT-IR spectrum analysis, dynamic light scattering, zeta potential, and morphology of nanoparticles were concentrated in this study. The effects of temperature, weight ratio of CS and PAA, and pH value on the physicochemical properties of nanoparticles were studied.

本研究中，我们以模板聚合法在几丁聚醣（Chitosan， CS）溶液中聚合丙烯酸（Acrylicacid， AA）以制备几丁聚醣－聚丙烯酸复合奈米颗粒并计算其产率，再以傅利叶红外线光谱仪、动态光散射粒径分析仪（Dynamic light scattering， DLS）、表面电位测定仪及穿透式电子显微镜等仪器分析CS－PAA 复合奈米颗粒之性质，以探讨聚合时温度、聚合反应时间、CS 与AA 之重量比，以及介质pH 值对CS－PAA 复合奈米颗粒结构的影响。

With the characterization of NMR and IR, combining with the synthesis of active species and studies of their structures, it is suggested that the hydride [RuHCl(PPh3)3], being favorably formed in the acid media, exhibited higher activity in the reduction of the C=C bond, while the hydride [RuH4(PPh3)3], being preponderantly formed in the basic media, showed activity and higher selectivity towards the C=O reduction.

通过核磁、红外等表征手段，并结合可能催化活性配合物的合成和结构研究，推测了在非水介质中对C=C和C=O双键起到活化作用的催化剂活性物种和可能的选择加氢反应机理，即，催化剂[RuCl2(PPh3)3]在酸性环境下倾向于生成[RuHCl(PPh3)3]物种，该Ru-H物种对C=C双键加氢反应表现出较高的活性；而碱性环境下则易于生成[RuH4(PPh3)3]物种，该Ru-H物种对C=O双键加氢具有较高的催化活性。

In this characterization, Bushnell neatly collapses the distinction between ''chaste'' and ''priggish.

在塑造这个人物性格时，布希内尔干脆推倒了道德纯洁与假正经的分野。

Assuming that the plastic deformation ofmaterial can be given by the internal states of material and theirevolution laws, a principal fibre bundle structure and the correspondentrelationships between the geometrical characterization and themechanical properties of the structure are obtained.

以连续介质力学内变量理论为基础，建立了一个以材料内部微结构变量为底流形，材料外部变形状态为对应纤维的材料状态纤维丛模型，使材料的力学特性与模型的几何性质自然对应起来。

Finally, based on the Choquet integral of distortion probability, the characterization of dynamic coherent measures is discussed. It provides theoretical evidence for the methods of different transaction dates risk measurement in empirical application. It i...

最后 ，对一般概率通过函数变换，应用 Choquet积分思想，对动态一致性风险度量的特征进行了探讨，指出它在实际应用中为多期风险度量方法提供的理论依据，对长期组合投资具有重要的现实指导意义。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。