查询词典 spectrum

Based on this spectrum function, the analytic reconstruction of the density image is studied.

在这一能谱函数的基础上，我们研究了康普顿散射图像的解析重建问题。

This paper introduces a design approach of a high performance optical spectrum analyzer.

本文综合介绍了高性能光谱分析仪的国内外研究现状和发展趋势。

To obtain the power spectrum of each of the images on the opaque plate an anamorphic lens is positioned in the path of light passing through the opaque plate.

为获取各图像在隔光板上的功率谱，合成透镜位于通过隔光板的光路中。

This paper introduces the mineralogical characteristics of the andalusite which include the physical and chemical conditions of the andalusite formation,crystalline structure,X-ray diffraction,chemical composition,chemical formula of crystal and infrared spectrum.

本文对该矿床红柱石的矿物学特征，包括红柱石形成的物理化学条件、晶体结构、X射线衍射、化学成分、晶体化学式及红外光谱特征等，进行了系统的研究分析。

Egyptian spectrum Andean Electronics Co., Ltd. in Guangzhou in 2006, is specialized in security systems, intelligent building systems, communications equipment automation systems design, installation and maintenance services in high-tech enterprises.

埃谱斯电子有限公司于2006年在广州成立，是专业从事安防系统、建筑智能化系统、通讯设备自动化系统的设计、安装及维修保养服务的高科技企业。

Spectrum-analyzing laser Doppler anemometry signal processor based on DSP .

基于DSP 的频谱分析型激光多普勒信号处理器的研究。

The results show that spectrum switch is appearing in the vicinity of critical diffraction angle c.

结果表明，在临界衍射角θc附近光谱开关出现。

Characters of soil or rock、spectrum properties of input wavelets、angle of incidence et al.

场地特性包括地形的特征尺寸如坡度和高度、介质的性质等，输入地震动特性包括输入地震波的频谱特性、入射角度等。

According to the special structure of the tilted fiber Bragg grating, the effect of the tilted angle θ on reflection spectrum of tilted fiber Bragg grating was studied by using the couplemode theory and transfer matrix.

根据倾斜光纤Bragg光栅的结构特点，利用耦合模原理，运用传输矩阵法，模拟分析了倾斜角度对光纤Bragg光栅反射特性的影响，并用实验对模拟结果进行了验证。

The relationship between inter-story torsion angle and torsion deformation ratio is deduced base on the rule of irregular plan structures in China tall building technical specification. Considering the inter-story ratio limitation of different performance levels under different earthquake hazard levels, a series of torsion angle demand curves are established and a new method named as Torsion Angle Capacity Spectrum is put forward for the PBSD of irregular plan frame structures.

从现行规范对平面不规则结构的限制条件出发，推导出了结构层间扭转角与扭转位移比的关系式，结合框架结构在不同性能水平下的层间侧移角限值，建立了平面不规则框架结构在不同地震作用水平下的扭转角需求曲线，提出了扭转角能力谱法。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。