查询词典 anomalous propagation

Based on finite difference method coupled with the famous elastic-plastic cap model of rock, numerical simulation and analyses for the propagation and evolution mechanism of 1 D detonated wave are done.

岩石爆轰波的传播、演化过程是极其复杂的，其影响因素较多，如地形、地质条件以及物理力学参数、爆破的种类和方法、爆源的大小和形状等。

Microglia cell, an important resident immunoreactive cells in the CNS, its activation is not only responsible for the cleavage of dead cell debris, but also involved in the initiation and propagation of the neuron injury.

小胶质细胞是脑内重要的免疫反应活性细胞，它的激活不是对死亡细胞进行清除，而是参与到神经元损伤的启动和放大过程。

According to the experiment results,the author analyses the combustion propagation mechanism of detonator delay composition and believes that the combustion in the lead tube is impulsive combustion,which is the key factor of influencing the delay precision of the detonator;secondarily,the effect of the igniting power terminal is also very obvious.

本文实验测试了硼系延期药和硅系延期药燃烧传播过程，根据实验结果分析了延期药燃烧传播机理，认为延期药在铅管内的燃烧是脉动燃烧，是影响雷管延期精度的主要因素，其次点火药头的影响作用也十分明显。

In this project, the selection criteria of matrix and reinforcement for obtaining composites with high strength and toughness are determined. The as-cast and aged microstructures of composites reinforced with particles of different strength are observed, and their metallurgical conditions and stabilization mechanisms are analyzed. The aging precipitation behaviors and mechanisms are studied. Some characteristics of nano-materials (micro-distortion areas) are found in 150nm- Al2O3p/Al composites and their formation mechanisms are expatiated. The "flexible" restriction to the deformation of the matrix by low strength AlN particle is observed by in-situ TEM and SEM techniques, and the mechanisms of its resist on cracks propagation and its contribution to composite strength are revealed. The high temperature deformation behaviors of Al2O3p/Al composites are studied. A rare-earth coating is established on sub-micron Al2O3 particles, leading to an improvement in wettability between coated Al2O3 and liquid aluminum and a decrease in infiltration pressure. The strength and ductility of coated particles reinforced composite are also increased. The interfacial characteristics, bonding structures and their formation mechanisms are studied, and the crystal orientation relationships between reinforcement particles and aluminum matrix are investigated. Finally a lighter composite with better balance of strength and damping properties is reinforced with hollow ceramic microballoons of ultra-lower strength.

本项目发现了获得高强度和高韧性复合材料的基体、增强体选择依据；观察了各种强度质点增强复合材料的铸态和时效态微观组织，分析其微观结构形成的金属学条件及稳定性机理，研究了其时效析出规律和时效机制，发现了150nmAl2O3颗粒增强铝基复合材料基体中的纳米材料特征，并解释了其形成机理；利用TEM和SEM动态拉伸技术发现了低强度质点AlN颗粒对变形协调的&柔性强化&机制，揭示了其对裂纹扩展的阻碍作用和对复合材料高强度的贡献；研究了中强度质点的Al2O3颗粒增强铝基复合材料的高温变形行为，并对其进行了稀土界面层设计与制备，改善了颗粒与铝合金之间的界面润湿性，降低了复合材料铸造渗透压力，提高了复合材料的强、韧性；研究了多种复合材料界面结构及形成机理，确定了增强体与基体之间的界面结合机制，分析了复合材料界面处的晶体学位向关系；最后制备了含微孔的中空型陶瓷颗粒增强的特种复合材料，得到了强度和阻尼综合性能较好的轻质复合材料。

First, systematic study on propagation, reflection and interaction of axial stress wave is made to deduce the calculation equation for axial elastic and plastic stress wave, which fit for analysis of impact buckling of axial compression member.

本文首先对轴向应力波在构件中的传播、反射及相互作用进行系统分析，推导出适合轴心受压构件冲击屈曲分析的轴向弹、塑性应力波计算公式。

In order to detect whether there is a base gap between the explosive charge and the inner cone of a shell and ensure its fighting performance, this paper puts forward an ultrasonic inspection method of base gap based on the principle of conservation of sound flux in propagation and according to the special construction of the shell .

为了检测出弹体装药与内锥面之间底隙的有无，以确保弹体的战斗性能，本文在超声波传播过程中声通量守恒原理的基础上，根据弹体结构的特殊性，提出一种利用超声波检测弹体内锥面底隙的方法。

70S in the 20th century the lower reaches of the Yellow River has started to move with helping to control the cotton and wheat aphid, 90 during the beginning of artificial propagation, and for the production.

七星瓢虫是鞘翅目瓢虫科的捕食性天敌昆虫，在我国各地广泛分布。20世纪70年代在黄河下游已开始用助迁法防治棉花和小麦蚜虫，90年代开始人工繁殖，并用于生产。

To study the calibration accuracy of stuctured light system based on cross-ratio invariant,measuring error and light-plane calibration error of system are analyzed,and an error propagation model is established by employing theories of error and matrix disturbance.

针对基于交比不变原理的结构光光平面标定方法，利用误差分析理论和矩阵扰动原理分别对系统的测量误差和光平面标定误差进行分析，提出了结构光测量系统的误差传递模型。

Language is an important way to spread human thoughts, also a great medium for culture's propagation.

4，语言是思想传播的重要手段之一，也是文化赖以传播和传承的载体

When using the device in the daisy chain configuration, maximum clock frequency is determined by a combination of propagation delay time (tDO 80 ns), data input setup time (tSU 40 ns), SCK high time (tHI 40 ns), and SCK rise and fall times of 5 ns.

当使用菊花链配置中的设备，最大时钟频率是由一个传播延迟时间（TDO的80纳秒），数据输入建立时间（台联40纳秒）的组合，SCK的时候（硫40纳秒），和SCK上升和下降5 ns的时间。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。