2) frequency conversion
频率变换
1.
The lithium thioindate(LiInS_2) crystal is an attractive material,which can be widely used for nonlinear optical frequency conversion in the infrared region.
LiInS2晶体是一种极具吸引力的晶体,可以应用于红外区域的非线性光学频率变换。
2.
The theoretical calculation of frequency conversion in a new bismuth triborate (BiB3O6) crystal with high nonlinear optical (NLO) coefficient is present.
理论计算了新型高非线性光学系数三硼酸铋晶体(BiB3O6)中的频率变换。
3.
This paper presents a new type of low noise frequency conversion circuit based on the research of phase noise conception, generation as well as relativity measurement method.
本文在对相位噪声的概念、产生及其相关测量方法研究的基础上,设计出一种低噪声频率变换电路。
3) frequency transformation
频率变换
1.
Design of impedance transforming-network by frequency transformation;
频率变换法设计阻抗变换器
2.
The Research and Realization of AD Frequency Transformation Based on DSP;
基于DSP的AD频率变换的研究与实现
3.
Diode is one of the nonlinear elements which are usually used in electronic circuit,whose speciality of frequency transformation is widely used in communication system.
二极管是电子电路中常用的非线性元件,其频率变换特性在通信系统中得到广泛的应用。
5) power convert
功率变换
1.
A variable reactor based on power converter was proposed.
提出了一种基于功率变换的可变电抗器,它由可变电抗变换器和电力电子功率变换器构成。
6) power conversion
功率变换
1.
Secondly,it presents general purpose inverter technology of 380 V,high voltage technology and power conversion technology for distributed generating system and urban rail vehicles.
并对工业上的380V通用变频技术、高压变频技术、分布式发电系统的功率变换技术及城市轨道车辆中电力电子技术作了介绍。
2.
Round the historic key problem in power conversion抯 development, The generation of Switch-Linearity Hybrid(SLH)Power Conversion and its feature in high efficiency, excellent waveforms, matching to complex loads and strong robustness are described.
围绕功率变换技术自身发展的历史性主题,对开关-线性复合功率变换技术(Switch-Linearity Hybrid Power Conversion)的由来,及其高效、优波、负载适应性和强鲁棒性等综合特征进行了阐述;以实绩说明了它在电源、传动及客户端电网治理等应用领域提升综合性能的作用;提出了SLH拓扑的构成原则;并为其今后的发展理清了学术思路。
3.
Switch-Linearity Hybrid Power conversion is researched and a switch-linearity hybrid precise current source is introduced in this paper to overcome these defects.
传统的电力校表电源效率低、体积大、重量重，针对上述缺点，论文研究了开关线性复合功率变换技术，提出了复合型精密电流源的方案。
补充资料：Radon变换和逆Radon变换
Radon变换和逆Radon变换
X线物理学术语。CT重建图像成像的主要理论依据之一。1917年澳大利亚数学家Radon首先论证了通过物体某一平面的投影重建物体该平面两维空间分布的公式。他的公式要求获得沿该平面所有可能的直线的全部投影(无限集合)。所获得的投影集称为Radon变换。由Radon变换进行重建图像的操作则称为逆Radon变换。Radon变换和逆Radon变换对CT成像的意义在于，它从数学原理上证实了通过物体某一断层层面“沿直线衰减分布的投影”重建该层面单位体积，即体素的线性衰减系数两维空间分布的可能性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条