High frequency surface wave radar is an important tool of the over horizon detection of sea and low-altitude targets.
高频地波雷达是对海面、低空目标进行超视距探测的重要手段。
Generally used in quenched and tempered state, can also carry on the carbonitriding and high-frequency surface hardening.
一般在调质状态下使用，还可以进行碳氮共渗和高频表面淬火处理。
Increase of detection range and fast precision tracking are main difficulties in weak aerial target detection for High Frequency Surface Wave Radar (HFSWR).
增大探测距离、快速精确跟踪是高频地波雷达探测飞行小目标所面临的主要困难。
Owing to the decametric wavelength, the angular resolution of High Frequency Surface Wave OTH Radar (HF SWOTHR) is usually coarse especially when dimensions of antenna array are restricted.
由于工作在高频段，高频地波超视距雷达的角分辨力较差，尤其是当阵长受限时。
To suppress ionospheric clutter in the echo signal of high frequency surface wave radar (HFSWR), a method to suppress clutter based on time-frequency analysis and eigenvalue decomposition is proposed.
针对高频地波雷达回波信号中的电离层杂波，提出了利用时频分析与特征值分解抑制杂波的方法。
"We use a laser, and it's tuned to a specific frequency to remove the pigment from the surface of the iris," Homer says.
霍姆医生说，“我们用激光技术，把它调到特定的频率，去除虹膜表面的色素。”
So, for example, we were talking about a threshold frequency as in a minimum frequency of light that you need in order to eject an electron from a metal surface.
举个例子来说，我们谈论的临界频率是，光从金属表面逐出一个电子，所需的最小频率。
The catch is that because low-frequency waves can travel great distances, when they do bounce off cavities or objects underground, they often end up far from the detection equipment at the surface.
捕捉过程是这样的，因为低频波可以传输到更远的距离，当它们遇到地下的空穴或其他物体反射回来的时候，已经距地面的接收装置很远了。
The fifth is the observation in reality of a predicted link between increased sea-surface temperatures and the frequency of the most intense categories of hurricane, typhoon and tropical storm.
第五，观察资料显示：海洋表面温度的持续上升和最高级别飓风、台风以及热带风暴的发生频率之间存在着可预测关系。
The influence of the parameters such as surface treatment state, laser output power, welding speed, protective atmosphere, and pulse frequency on the welding quality was studied.
研究了试件表面处理状态、保护气体、激光输出功率、焊接速度、激光脉冲频率等工艺参数对焊接质量的影响规律。
The Phalanx operator used the Block 1b's surface mode to perform electro-optical tracking and the system's radio frequency sensors to provide range data to the LaWS.
Phalanx操作人员使用Block1b的表面模式进行光电跟踪，系统的射频传感器为LaWS提供范围数据。
We use a laser, and it's tuned to a specific frequency to remove the pigment from the surface of the iris Homer says. The procedure takes about 20 seconds.
霍姆医生说，“我们用激光技术，把它调到特定的频率，去除虹膜表面的色素。这一过程会花20秒的时间。”
If user combines the two in actual operating process, frequency of mechanical rapping can be reduced and the impact on heating surface welded junction of mechanical rapping position can be relieved.
如用户在实际运行过程中两者结合使用，可减少机械振打的频率，减轻对机械振打部位的受热面焊口的冲击。
The surface acoustic wave (SAW) sensor can transform the measured object into frequency output, viz a kind of digital signal output.
声表面波(SAW)传感器能将被测量转换成容易检测的频率信号，即一种准数字信号的输出。
An Electrical Surface Treatment system consists of high frequency generator, high voltage transformer and treating electrodes.
电气表面处理系统由高频发生器，高压变压器和治疗电极。
Methods The non-membrane model was introduced to observe the influence on the drug release and gel erosion for surface area and shaking frequency.
方法采用无膜溶出模型，考察释放面积、振荡频率对眼用凝胶溶蚀及药物释放的影响。
Results the gel erosion and drug release were increased with the increase of surface area and shaking frequency.
结果凝胶溶蚀和药物释放随着振荡频率和释放面积的增加而加快。
The terms of this type of audit should spell out timetables, frequency, reporting results and what action should be taken in the event that problems surface.
这类审计需要列出时间表、审计频率、汇报结果以及问题出现时所需采取的行动。
Surface mounted piezoelectric devices for frequency control and selection - Standard Outlines and terminal lead connections - Part 1: plastic moulded enclosure Outlines.
频率控制和选则用表面安装的压电器件。标准外形和终端引线的连接。第1部分：塑料模压外壳外形。
The test result shows tha the influence of related displacement on surface finish is linear and related to amplitude and frequency of vibration and spindle speed.
试验结果表明：相对位移对表面光洁度的影响是线性”的，不仅与振动幅值有关而且与振动频率及主轴转速有关。
Ionospheric frequency modulation causes spreading of the surface clutter in Doppler domain which greatly limits the detection performance of HF sky-wave radars.
电离层频率调制导致地表面杂波的多谱勒展宽，极大地限制了高频天波雷达的目标探测性能。
The results showed that, with appropriate wheel vibration frequency or appropriate workpiece rotate speed, the surface precision of workpiece can be improved.
结果表明：合理选择砂轮振动频率或工件主轴转速能有效提高工件表面精度，降低表面波纹度。
This figure is based on the average area of the paths of totality, the total surface area of the Earth, and the overall frequency of total eclipses.
这个数字是根据全食路径的平均面积以及日全食总频率来算的。
The method and results would be useful for analysing angular and frequency dependence of the bottom (or surface) scattering at low grazing angles.
本方法和结果将有助于分析小掠角海底(面)散射的角度、频率依赖关系。
Based on the analysis of test results, the effect of both the surface topography and loading frequency on the joint closure behavior is discussed.
通过对试验结果的分析，获得加载频率和表面形态对节理闭合变形性质的影响规律。
The location of joint surface has a close relation with the natural frequency of the structure.
接合面的位置对结构的固有频率也有较为明显的影响。
With the ssDNA as probe on the electrode surface, we can detect the frequency change and show it on the computer display.
将单链DNA作为探针点在电极表面， 测量晶振频率的改变量，并设计出后续处理电路。
The microwave absorbing performance of frequency selective surface with resistance patch (FSSR) was analyzed in this paper.
对电阻贴片频率选择表面(FSSR)的吸波性能进行了研究。
The microwave absorbing performance of frequency selective surface with resistance patch (FSSR) was analyzed in this paper.
对电阻贴片频率选择表面(FSSR)的吸波性能进行了研究。
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