... penetration 贯穿，穿透 penetration frequency 穿透频率 penetration of current 电流穿透深度 ...
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... frequency four-vector 频率四维矢（量） frequency of penetration 穿透频率 frequency of vibration 振动频率 ...
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临界穿透频率 critical penetration frequency
·2,447,543篇论文数据，部分数据来源于NoteExpress
提高带宽容量最便宜的方法是增加更多频谱或是某个网络降低到更低的频率以使无线电波更容易穿透墙壁。
The cheapest way to increase capacity is to add more spectrum or to move a network to a lower frequency, which allows radio waves to penetrate walls more easily.
波频率越低，其传播距离越远、穿透性越强。
The lower the frequency of the wave, the farther it can travel or penetrate physical objects.
电波穿透海水的距离取决于电波的频率和海水的盐度。
The radio signals ability to penetrate water depends of the frequency and the salinity of the water.
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