The dual-frequency laser as a light source takes a key element in the interferometer.
本文提出一种新型中频差双频激光器——磁致旋光-塞曼双频激光器。
Dual-frequency laser interferometer is a widely used precision measurement instrument.
双频激光干涉仪是应用广泛的精密测量仪器。
At last, a novel broadband differential dual-frequency antenna is designed, simulated and measured.
最后，提出了一种新型宽频带双频差分天线。
The dual-frequency and dual-polarization microstrip antenna for space-borne SAR application is presented.
该文设计了共用一个物理孔径的双频双极化的微带天线。
However, slightly different paths of carrier L1 and L2 will bring errors to estimations of the dual-frequency method.
不过，两载波信号l 1和l2之间的传播路径差异会给双频方法带来误差。
This paper presents a new method for designing a dual-frequency patch antenna with circular and linear polarizations.
提出了一种同时具有圆极化和线极化的双频新型开槽微带天线的设计方法。
According to the data protocol of the dual-frequency GPS receiver, the corresponding data is extracted, calculated, displayed and so on.
根据GPS双频接收机的数据协议，对相应的数据进行提取、计算和显示等工作。
The machine adopts dual-frequency conversion timing technology and Japan panasonic transducer, assuring every part drives synchronously.
采用双变频调速技术，日本松下变频器，保证机器各部位运行同步。
A high-contrast, fast-response, and polarizer-free reflective display using a dye-doped, dual-frequency liquid crystal gel is demonstrated.
利用染料掺杂双频率液晶胶体材料制备了一种对比度高、响应速度快且无需偏光片的反射式显示器。
The dual-frequency converting hydraulic pipeline cleaning device is applicable to the pipeline cleaning field of various hydraulic devices.
本 实用新型适用于各种液压装置的管路清洗领域。
Speckle in SAR images will disturb classification accuracy. Vector filter of speckle is used to dual-frequency images before classification.
SAR图像的相干斑会影响图像的分类准确度和精度，在进行分类处理前，对双波段全极化SAR图像相干斑进行矢量滤波处理。
The aim of the invention is resolving the problem of the difficult design of the present conical conformal dual-frequency microstrip antenna.
本发明的目的是为解决目前锥面共形双频率微带天线 的设计极为困难的问题。
Objective: To evaluate the lesions size created by confocal dual-frequency high-intensity focused ultrasound (HIFU) and conventional single-frequency HIFU.
目的：比较双频共焦模式和单频模式高强度聚焦超声(HIFU)单次辐照毁损灶的大小。
The invention provides 16-step dual-frequency grating phase shift profilometry capable of absolute phase unwrapping in the three-dimensional sensor technology.
本发明是三维传感技术中一种可绝对位相展开的十六步双频光栅相移轮廓 术。
A new dual-frequency microstrip antenna is presented, which operates at dual frequencies with a compact size by using two shorted probes and slots on the patch.
本文介绍一种新颖的双频微带天线，它通过在贴片上开十字槽和加载两个短路探针实现小型化和双频工作。
Dual-frequency power supply is optimally selected product in electrolysis and smelting industry and features greater improvement for product quality and output.
双频电源是电解冶炼领域的优选产品，对于提高产品质量有明显作用。
The mathematic model of GPS dual-frequency precise point positioning and the corresponding program named "GPS-PPP" recently developed by the author were presented.
简要介绍了GPS双频精密单点定位数学模型及自主研制的精密单点定位软件。
The paper introduces both principle of dual-frequency induced polarization and EH4 electromagnetic instruments and synthetical application of such two instruments.
文章介绍了双频道激电仪和EH4电磁仪的原理及两种仪器综合应用的方法。
The dual-frequency carrier phase observation equation is built and ionosphere-free predigested, the estimate formula of zenith wet delay is deduced with least square method.
建立了双频载波相位观测模型，并将其进行无电离层延迟化简，用最小二乘原理推导了天顶湿延迟的估值公式。
According to structural features and technical requirements of the dual-frequency subreflector, the performance and shaping process technology of hybrid fibre composite are studied.
针对双频副反射器的结构特点和技术要求，研究了混杂纤维复合材料的性能和成型工艺。
Using dual-frequency fields, two processes of high-supersonic and dual-high frequency electromagnetic shaping near net- shape are successfully carried out, producing complex shapes such asm…
利用开发的双频电磁近终成形技术，成功地实现了两种不同频率组合下的电磁成形过程，制备出了复杂弯月截面、复杂形状无模壳电磁成形的样件。
The influence of Tgd factor is illuminated through the theory of establishing the VTEC model above pierce point by dual-frequency observation, its magnitude using practical datas is analyzed.
针对一类具体的应用，利用测量数据间的时域相关性分析了信息精确度与观测频率以及能耗与观测频率的关系，构建了信息精确度与能耗的关系模型。
The present state of the dual-frequency laser interferometer in the world is introduced in brief. The trends of development to high resolution, high accuracy, high measurement speed etc. are given.
文章概述了国内外双频激光干涉仪产品的现状，介绍了近年来双频激光干涉仪向高分辨率、高精度、高测速等几个方向的发展趋势。
The main effect on the GPS signals of ionosphere and ionospheric refractive model are researched in this paper; then the dual-frequency corrected model of ionospheric refractive error is concluded.
研究了电离层对GPS观测信号的主要影响及电离层折射误差模型，总结了电离层双频改正模型。
An experimental investigation of dual frequency tunable laser output from dye mixtures in ethyl alcohol pumped by a N_2 laser is described.
报道用N_2激光泵浦混合染料溶液以获得双频可调谐激光输出的实验研究。
The realization mode of solving ambiguity for multiple frequency ranging usually has two kinds:quadric difference frequency and uneven dual frequency.
多频测距解模糊的实现方式通常有两种：二次差频和参差双频。
This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.
对双PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究。
This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.
对双PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究。
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