查询词典 anomalous propagation

It is found that there exist quasi-45 d,quasi-23 d and quasi-14 d low-freque ncy precipitation over the plateau and that the lower of the frequency,the more likely of their propagation from south- and east-side of the plateau to the pl ateau itself,and v.v.

研究表明，准45 d、准23 d和准14 d等3类低频降水的频率愈低，低频降水愈趋向于从高原东侧和南侧向高原传播；反之，频率愈高，低频降水愈趋向于由高原向高原东侧和南侧传播。

This paper gives a detailed study of truth reasoning based on fuzzy proposition, strict statement of truth-value propagation in uncertainty reasoning, defined in , is shown.

不确定推理是知识工程中的重要内容，基于模糊命题的真值推理具有广泛的应用。

In this paper the accuracy of the precision engineering control networks (Trilateration and Triangulation), established by using modern electronic distance measuring instruments and theodolites is discussed, and the method of optimization design is proposed that is based on the theory of probability and error propagation and applying the error ellipses to analyze the position accuracy of the points.

本文论述用近代光电测距仪及经纬仪建立的精密工程控制网的精度，并提出基于概率论与误差传播理论的、用误差椭圆来分析点位精度的优化设计方法。建议的平差计算与精度评定方法以专用的计算机程序来完成。

The study of propagation of atmospheric gravity wave constitutes an important part in ionosphere physics, which is significant for researching the coupling between upper and lower atmosphere, the coupling between north and south of the Earth and the coupling between ionosphere and thermosphere.

大气重力波的传播机制研究是电离层和高层大气动力学中的一项重要内容，对于深入了解近地空间中能量的上下耦合、南北耦合，以及电离层高度上的电离层-热层耦合，具有重要的学术意义。

Analysis of causes as to why MCS propagates to the southwest of MCC indicates the propagation direction depends on the direction and velocity of the two convergences.

分析MCS在MCC西南方向传播的原因表明，两条辐合线的移动方向和速度决定了暴雨MCS的传播方向。

Computer simulation is used for studying the propagation of AP and analyzing the influences of SCI.

本文用计算机仿真的方法分析了神经电信号传导过程及脊髓损伤对动作电位传导的影响。

This Al -free 980nm pump laser have many merits, such as improved catastrophic optical damage level; no degradation due to oxidation of aluminium during fabrication process and laser operation, which is desirable characteristic for multi-step growth; lower electrical and thermal resistance with GalnP cladding; better carrier confinement with GalnAsP confinement layers; Selective chemical etching between GaAs and GalnP maks precisely control for fabrication of stripe geometry lasers.· Calculated the physical parameters of ternary and quaternary III - V compoundsby interpolation formulas based on curve fits or on a linear regression, such aslattice parameter, band gap, and refractive index.· Using luttinger-kohn Hamiltonian-based propagation-matrix method presentedby S.L.

这种无Al980nm半导体激光器可以提高激光器出现腔面损伤所需的能量，消除在生长过程和应用过程中由于Al的氧化而使激光器的使用寿命缩短的问题，便于激光器的多次生长；以GaInP为盖层可以降低电阻和热阻；可以精确的控制GaAs和GaInP之间的化学刻蚀，便于激光器几何形状的控制。

Because multi-resolution wavelet analysis has low computation cost and is sensitive to singularity of signal, db2 wavelet is adopted to analyze the characteristics of welding seam signal, and the propagation rules of wavelet transform extrema is proposed, which decrease the computation cost greatly.

在焊缝类型识别的研究方面，提出采用大尺度下的小波变换近似来研究信号的类型，利用小波分析的多尺度特性，有效地排除了局部信号对焊缝整体特征的影响，可以很快地确定焊缝的类型。

A radial basis function neural network, as well as a back propagation neural network for comparison, is trained and tested using 23 series of centrifuge model test data, 2 fullscale test data, and prototype date of a practical project.

收集23组挡墙离心模型试验数据，2组足尺试验数据，1组实际工程的破坏数据，共26组样本作为训练及检验样本，建立了可用于加筋挡墙设计高度预测的径向基函数网络及误差反传网络模型。

Based on the beam propagation dynamic equation with the photovoltaic effect of the uniform background illumination, it is theoretically demonstrated that gray photovoltaic spatial solitons can exist in photovoltaic media with positive refractive index perturbation.

从考虑背景光的光伏作用后的光束在光伏媒质中传播的方程出发，证明了在折射率改变为正的光伏媒质中也可以形成灰孤子。

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。