高频电子技术,High-frequency Electronics
1)High-frequency Electronics高频电子技术
1.It employsHigh-frequency Electronics as an instance of curriculum development to illustrate the setting of tasks,ways to implement them and the design of learning situation in the course of finishing the tasks,the option of content and evaluation of the completion of tasks.以高频电子技术课程为例,详细介绍了任务引领型课程的开发过程,包括任务的提出,任务实施的方式,任务实施过程中所涉及到的学习情景开发,知识内容的选择和实施过程的考核和考查等。
英文短句/例句
1.The Application of Multisim Simulation to the Teaching of High Frequency Electronic TechnologyMultisim仿真在“高频电子技术”教学中的应用
2.The Power Tech of Vast Frequency Conversion and the Research and Production of High Frequency Electronic Ballast;广谱变频电源技术及高频电子镇流器的研制
3.On the Integration of Analog Electronic Technology and High-frequency Circuit in Higher Vocational Colleges;高职高专“模拟电子技术”与“高频电子线路”课程整合探讨
4.The High-frequency High-voltage Low Temperature Plasmas Discharge Technology for Material Surface Treatment;材料表面处理高频高压低温等离子体放电电源技术的研究
5.Research on Deicing Power Transmission Lines with High-frequency and High-voltage Excitation输电线路高频、高压激励融冰技术研究
6.Electronic Let-off Mechanism of Speedy Water-jet Loom with PLC and Frequency Conversion Technology基于PLC及变频技术的高速喷水织机电子送经系统
7.low frequency discharge低频放电（一种等离子体技术）
8.The Application of Frequency-Tracing Technology Based on PLL for HF-Inverter Power Supply;锁相环频率跟踪技术在高频逆变电源中的应用
9.Techniques for Measuring the Electromagnetic Parameters of Microwave Materials with High Permittivity in Broad Band微波高介电常数材料宽频带测试技术
10.Research on UHF Detection for Partial Discharge in GIS;GIS局部放电特高频检测技术的研究
11.Research of High Frequency Switch Power Supply Based on Soft Switching Technique;基于软开关技术高频开关电源的研究
12.Studying for Solid-state Induction Heating Power Source of High-frequency Technology固态感应加热电源的高频化技术研究
13.Power Electronic Technology in Wind Generation System of Variable Speed Constant Frequency变速恒频风力发电系统中的电力电子技术
14.The Technique Research of High-frequency Argon Electrotome s Gas Control System;高频氩气刀氩气子系统控制技术研究
15.APPLICATION AND EVALUATION OF HIGH FREQUENCY SWITCH SUPPLY IN TELECOMMUNICATION SUPPLY SYSTEM;高频开关电源技术在电信电源系统中的应用
16.PD detection of gas insulated cables by the UHF method气体绝缘管道电缆局部放电的超高频检测技术
17.Research on Ultra-High-Frequency Partial Discharge Detection Technique for Power Transformer;电力变压器局部放电超高频检测技术的研究
18.Research of Measurement Technique on Soil Water Content Using a High Frequency Capacitance Based on an Additional Resistance附加电阻法高频电容土壤水分测试技术研究
相关短句/例句
High Frequency Electronics Technology高频电子技
1.The paper introduces writing background, main contents and features of the textbookHigh Frequency Electronics Technology .本文介绍了《高频电子技术》教材的编写背景、主要内容和教材特点 ,最后讨论了针对该教材的教
3)high frequency electromagnetism technology高频电磁场技术
4)HCPT高频电容场技术
1.Perioperative nursing care in the treatment of 53 patients with hemorrhoids byHCPT高频电容场技术治疗痔病53例围术期护理
5)high-frequency electric ion operating高频电离子手术
1.The effect ofhigh-frequency electric ion operating apparatus combined albothyl in treating condyloma acuminata;高频电离子手术联合爱宝疗浓缩液治疗尖锐湿疣的疗效观察
6)high-frequency techniques高频技术
延伸阅读
甚高频和超高频多普勒雷达工作在30～3000兆赫频段的气象多普勒雷达。一般具有很高的探测灵敏度。因探测高度范围可达1～100公里，所以又称为中层-平流层-对流层雷达 (MST radar)。它主要用于探测晴空大气的风、大气湍流和大气稳定度（见大气静力稳定度）等大气动力学参数的铅直分布。原理 这类雷达通过以下几类电磁波和大气的相互作用,对晴空大气进行探测:①由大气湍流运动引起的折射率不均匀结构对电磁波的散射；②稳定大气分层结构对入射电磁波的部分反射；③有时出现于中层大气的自由电子对电磁波的散射；④中层大气中的流星余迹散射。散射体积内空气的运动，使雷达回波具有多普勒频偏。结构 MST 雷达的结构和气象多普勒雷达大致相同。其特点在于：它们一般配备了大型天线（天线阵），有些甚高频段雷达的天线阵，尺度达 30～200米，采用半波振子阵或八木天线振子阵，以相控方式实现波束扫描。超高频段雷达采用直径几十米的可动抛物面天线，这类雷达的发射功率在几百千瓦至 2兆瓦之间，发射功率和天线面积的乘积值在106～1010瓦·米2之间。此外，为获得高灵敏度和高空间分辨率，在脉冲发射体制和回波数据处理方面，也采取一些技术措施。用途 利用回波的多普勒频谱可以进行下述各项测量：①探测大气风场的铅直分布。同一仰角，空间分辨率约为 150～1000米，采用脉冲压缩技术后，分辨率已可达到15米。②探测大气湍流结构。可以给出平均折射率湍流结构常数(C厒)的铅直分布。再引入一些大气湍流模式后，可以推算出湍流耗散率的铅直分布。③探测对流层顶高度及逆温层的高度和厚度。目前，甚高频和超高频多普勒雷达还只能测定上述气象要素的铅直廓线及其时间变化，而不能给出三维空间分布资料。参考书目K.S.Gage，B.B.Balsley,Doppler Radar Probing of the Clear Atmosphere,Bulletin of American MeteorologicalSociety,Vol.59，No.9，pp.1074～1093，1978.
