查询词典 hf

However,the spectrum analysis method cannot reflect the evolution of the HF backscatter in time domain.

传统的谱分析方法，无法反映回波信号在时间上的演化规律。

This conclusion will be of much significance in the target detection and ocean sensing of HF radar.

这一结论对高频雷达目标探测和海态遥感研究都具有重要意义。

This research makes progress in HF radar area.

本研究为进一步完善地波超视距雷达探测的功能提供了新的方法。

This study sought to evaluate the association between moderate alcohol consumption and incident HF.

此研究试图评估适当饮酒与心衰事件之间的联系。

Like all JTRS Operational Requirement Document waveforms in the 2 MHz to 2 GHz frequency range, the UHF SATCOM and HF waveforms can run in any of the GMR system's four reprogrammable Universal Transceivers.

同所有联合战术无线电波形需求在2MHz到2GHz之间一样，超高频卫星通信和高频波形能够在任何车载地基移动无线电系统的四重编程通用收发器中运行。

A software high frequency channel simulation algorithm is presented aiming at the characteristics of HF channel which has unrepeatability, multipath and fading.

针对短波信道不可逆性、多径以及衰落等特点，提出了一种纯软件的短波信道仿真算法。

Be reduced to the minimum.The HF have no-power crossover network .

系统已内置优化无源分频网络。

A reaction kinetic model for synthesis of ETBE from ethanol and tertiary butyl alcohol,catalyzed by HF/USY modified by hydrofluoric acid,was established.

以乙醇和叔丁醇为原料、氢氟酸改性USY分子筛为催化剂合成乙基叔丁基醚，建立了反应动力学模型。

In the upper atmosphere, ionosphere, magnetosphere. At present, there are a variety of advanced ground based instruments, such as proton magnetometer, fluxgate magnetometer, Digisonde, GPS ionospheric TEC and scintillation monitor, HF Doppler, all-sky meteor radar and airglow imager etc. The data monitoring and processing center can monitor the observation instrument working state in all stations and collect and process data through Internet. Some of processing data results can be published on the web near real time( http://space.iggcas.ac.cn ).

目前，台链拥有质子磁力仪，磁通门磁力仪，电离层数字测高仪， GPS TEC 和电离层闪烁监测仪，高频多普勒探测仪，全天空流星雷达和气辉成像观测仪等多种先进的地基空间环境综合观测设备，台链监控和数据中心对各台站观测仪器和数据状态进行监控，观测数据实时传输到台链数据中心进行处理和保存，并在互联网上实时发布（网址： http：//space.iggcas.ac.cn ）。

Where high frequency performance matters (and even DC and VLF CIRCUIT s may use devices with high Ft and therefore be vulnerable to HF instability) it is very important to consider the effects of stray capacity.

对于高频电路，分析分布电容的影响是非常重要的。（即使是DC电路和VLF电路，由于可能会用到具有高FT的器件，因此也会存在高频稳定性的问题。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。