| 1. | Hydroelastic analysis of vlfs using plate green function method
超大型浮体水弹性分析的平板格林函数法
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| 2. | Methods of measurement of electrical performance for lf vlf transmiters
低频甚低频发射机电性能测量方法
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| 3. | Vlf radio navigation system
甚低频无线电导航系统
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| 4. | Application of vlf - em method in mineral exploration of longtoushan ag - pb - zn deposit
甚低频电磁法在龙头山多金属矿床勘查中应用
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| 5. | Experimental research of the hydroelastic response of box - typed vlfs in non - uniform sea environment
箱式超大型浮体在非均匀海洋环境下的水弹性试验
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| 6. | Comparison of modal function expansion method with eigenfunction expansion method for prediction of hydroelastic responses of vlfs
预报超大型浮体水弹性响应的模态函数展开方法和特征函数展开方法比较
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| 7. | Out in the no - mans land of the international waters are the only means of communication with the submarines , to use radio in the vlf or elf range
在茫茫大洋深处，唯一可用的通信手段就是甚低频或者极低频无线电。
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| 8. | Abstract : the vlf through - the - earth communication system is recognized as the most reliable way of conveying dispatching information due to its special transmission media
文摘:由于大地信道稳定，低频透地通信被认为是最可靠的救急通信方式。
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| 9. | The vlf / hf by using ar presents trend of increasing , this is tallied with clinic . analyzing 5 minute hrv ( decubitus ) for 4 myocardial ifchemia sickness by using ar and fft
现代谱估计所得的vlf / hf比值随年龄( 20岁)增加基本呈现增加的趋势，与临床认识吻合。
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| 10. | It is infered signal length is short , the spectrum resolving power is low by using fft method , so the vlf % and lf % by using 2 method has great difference
推测由于5分钟hrv信号点数较少， fft分析时分辨率不高，因此两种方法所得极低频vlf和低频lf有较大差异。
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