该方法能够以较高精度估计目标的多普勒起始频率和中心频率,并能分辨在时频平面位于同一直线的多个目标。
This method is able to estimate precisely the initial Doppler frequency and the Doppler centroid, and to distinguish between multiple targets lying in the same line in the time-frequency plane.
被合成的频率扫描信号的起始频率、终止频率和扫描时间可根据需要随意设定,并且可以实现对三者的精确控制。
Start frequency, stop frequency and sweep time of the signal synthesized by the method can be preset freely and controlled accurately.
对于力量与体重、肌电图的峰值、起始时间、峰值时间、中位频率、平均功率、和频段均进行标准化描述后进行统计计算。
The descriptive statistics for body weight normalized strength, normalized peak EMG, time to onset, time to peak, median frequency, mean power frequency, and frequency bands were calculated.
研究了高起始磁导率(6000 ~ 20000)铁氧体和由该磁芯制成的变压器的电感频率依赖关系。
The research of the high initial permeability (6000 ~ 20000) ferrite and the frequency dependence of inductance of the ferrite transformer made by high permeability ferrite core are presented.
飞:可以放行至北京首都国际机场,按计划航路飞行,使用跑道27右,多佛5F离场,修正海压1007,起始高度修正海压上7,000英尺,应答机3037,离场频率119.72 ,英航39。
PF: Clearedto Beijing Capital Airport, flight planned route, using runway 27 right, DOVER 5Foxtrot departure, QNH1007, initial climb to 7,000 feet, squawk 3037, Departureon 119.72, SPEEDBIRD 39.
作者认为载荷频率的上述影响是因裂纹尖端的应变速率随载荷频率而变化,从而改变了裂纹起始与扩展的热力学条件。
The authors suggest that this effect is due to the change in the strain rate of crack tip metal thus altering the thermodynamics of crack onset and growth.
0t的范围内,考查了具有高起始磁导率的纳米晶合金的每周损耗频率关系。
0t, the frequency dependences of the total power losses per cycle have been investigated for the nanocrystalline alloy with high initial permeability.
0t的范围内,考查了具有高起始磁导率的纳米晶合金的每周损耗频率关系。
T, the frequency dependences of the total power losses per cycle have been investigated for the nanocrystalline alloy with high initial permeability.
0t的范围内,考查了具有高起始磁导率的纳米晶合金的每周损耗频率关系。
T, the frequency dependences of the total power losses per cycle have been investigated for the nanocrystalline alloy with high initial permeability.
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