子模型

This paper presents a new order-selection algorithm for exponentially damped sinusoids model based on subspace and structured total least norm method.

本文针对指数阻尼正弦信号模型提出了一种新的基于子空间和结构总体最小范数的阶选择算法。

The introduction of quark delocalization can be viewed as taking into account either the contribution of excited configurations or the distortion of individual baryon due to mutual interaction, its characteristic is to allow the six-quark system to choose the favorable configuration by its own dynamics automatically; Various quark models extended linear or quadratic confinement potential for 3q system to 6q system directly. Due to the nonlinearity of QCD, quark-quark interaction in color singlet may be different from that in non-color singlet. For example, the contribution of three-gluon exchange to one baryon is different from that to two baryon singlets, and so on.

引入夸克蜕定域效应，既可以看作是考虑了具有较高能量的激发组态的贡献，也可以看作是考虑了重子不碰撞过程中发生了畸变，其特点是让夸克体系自动选取最有利的组态；以往的QCD模型总是将哈密顿量直接从单重子系统推广到双重子系统，但QCD理论是一个非线性理论，处于色单态的两个夸克间的相互作用可能不同于处于非色单态的两夸克间的相互作用。

Objective To construct expression vector of HBV infectious replicon and establish hepatitis B virus replication model in vitro, and observe the dynamic changes of viral replication and its sensitivity to antiviral durg.

目的 构建乙型肝炎病毒感染性复制子表达载体，建立HBV体外复制细胞模型，分析其复制特性及对抗病毒药物的敏感性。

On the basis of Reiters model of default reasoning, a new modal operator has been introduced, and a cognitive model of default reasoning has been proposed.

在Reiter缺省推理的基础之上，引进新的模态算子，提出了认知缺省推理的模型。

A quantum confinement model is used to explain the experimental results of the first order optical phonon mode.

采用一个量子限制效应模型来解释纳米硅线的一阶光学声子的实验结果。

The velocity of the 60° dislocation decreases as temperature increases, which is consistent with the phonon drag model.

而且，位错的速度随模拟温度的升高而降低，这一结果与声子拖拽模型相吻合。

The Evolution Model of Partons in Nuclei model, which de-scribes the quark-gluon distribution in nuclei, is put forward to investigatethe micro-dynamical mechanism of the EMC effect and its relative processes.

中文摘要为探讨EMC效应及有关物理过程的微观动力学机制，我们提出了描述核内夸克—胶子分布的核内部分子演化模型。

Finally, the analysis results of assembly interference and assembly clearance show that the numerical models established have high degree of precision. That can be used as a reference for the profile of cutter and the virtual design of double-roller enveloping hourglass worm reducer.

最后的装配干涉和装配间隙分析结果表明，建立的数字化模型精确度很高，可以为加工蜗杆时刀具廓形的设计，无侧隙双滚子包络环面蜗杆减速器的虚拟设计等后续工作提供参考依据。

By the half-analytic calculation method, the paper analyzed the tunnel circumjacent constringency and vault settlement with time and alteration depth of tunnel face, the relevant constringency model was built, and the reasonable second support time for hard and soft rock tunnel were proposed.

中文摘要：利用半解析计算方法，考虑了隧道周边收敛和拱顶下沉随时间和掌子面推进距离的变化情况，建立了相关的收敛模型，并由此给出了硬岩及软岩隧道中的二衬的合理支护时机，并结合工程实际对Ⅱ、Ⅲ、Ⅳ、Ⅴ级围岩进行了周边收敛结果的最小二乘拟合计算。

We constructed a holographic-optical-tweezers-based line traps system and established a theoretical model for the line trap.

在本研究中，我们建构一套线形捕捉全像雷射镊夹系统，并建立模型分析线型雷射镊夹捕捉微粒子的捕捉力。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。