查询词典 hf

More and more countries pay great attention to HF ground wave OTHR for its military and civil foregrounds.

由于具有良好的军事应用前景和诱人的民用潜力，高频地波超视距雷达越来越受到世界各国的高度重视。

A simulation of sky-wave interference suppression in HF ground wave radar system is realized to explain its application in reality.

还利用该方法对高频地波雷达中天波干扰的极化抑制进行了仿真，证明了算法的有效性。

The test experiment illustrates using the HSP50216 in far-distance HF ground wave radar show that it improves...

实验证明，HSP50216的应用大大提高短波接收系统的灵活性和技术指标。

The simulation of bistatic/multistatic HF ground wave radar echo is analyzed.

分析了双／多基地高频地波雷达回波信号的仿真过程。

The bias of calibration results is analyzed by numerical simulation, and its application in HF ground wave radar OSMAR2000 shows this algorithm effective and credible.

通过对模拟的海洋回波的数据进行处理，分析算法的幅相误差校准值的估计偏差。将此算法应用在实测数据处理中，验证了其有效性及可靠性。

An algorithm of HF ground wave radar array calibration for amplitude and phase errors based on sea-echo is proposed in this paper.

摘要针对现有无源校准方法在高频地波雷达中失效的问题，该文提出了一种基于海洋回波的高频地波雷达阵列幅相误差校准算法。

The Hafnium element is detected in the film by X-ray photoelectron spectroscopy.

采用XPS分析了薄膜的成份，证实了Hf元素的存在。

At last, HF/4-31G means was used to calculate the model molecules of the 4 complexes, the calculated results revealed the relationships between the bioactivity of Huperzine A analogues and the Mullicken Bonding Populations, Lowest Unoccupied Molecular Orbital energies of HupA analogues.

四个复合物模型分子的量子化学研究结果揭示了化合物的生物活性与复合物中化合物和酶之间的Mullicken键级、活性状态化合物的LUMO轨道能量等量子化学参数之间的联系，初步指出了阳离子-π作用的重要性。

In this research, hybridize the HF and LF numerical softwares to simulate the antenna radiations under large structure is the main work.

中文摘要本研究主要工作是利用高低频的电磁软体模拟天线在超大型结构体下的辐射。

ObjectiveTo explore the effects of HG Granule on collagen and Hyp in the liver of HF model rats.

目的研究HG颗粒对CCl4 致肝纤维化大鼠肝脏胶原纤维及羟脯氨酸含量的影响。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！