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- RF (or microwave) signals have switching considerations that differ from those for DC or low frequency AC signals. 射頻（或微波）信號的切換不同于直流（DC）或低頻交流（AC）信號。
- low frequency AC coded track circuit 低頻交流電碼軌道電路
- The low frequency AC voltage superimposition method for monitoring of power cable insulation 電力電纜絕緣監測中的低頻交流電壓疊加法研究
- T18 computer therapeutic equipment is a low and intermediate frequency AC machine. Clinic shows that the equipment is effective in curing painful diseases. T18電腦治療儀是一種中低頻交流電治療儀,臨床實(shí)踐說(shuō)明它在治療疼痛性疾病方面有效。
- In electronics, undesirable low frequency currents interfering with a desired signal, and usually caused by a poorly screened alternating mains supply. 在電子學(xué)領(lǐng)域，一種不希望發(fā)生的低頻電流，它干擾所要求的信號。通常這種現象是由于交流供電線(xiàn)路屏蔽不良引起的。
- The abnormal colours of seedlings turned a low frequency. 顏色異常的苗木出現頻率較低。
- Laser direct writing of micro-OVD with low frequency templates[J]. 引用該論文 魏國軍;周小紅;周雷;陳林森.
- By means of introducing transcendental information,the low frequency compensation of the alternating current(AC) signal of the scanning millimeter wave(MMW) total power radiometer is researched. 通過(guò)引入一種先驗知識,研究了毫米波交流全功率輻射計低頻信號失真的補償問(wèn)題。
- By means of introducing transcendental information, the low frequency compensation of the alternating current (AC) signal of the scanning millimeter wave (MMW) total power radiometer is researched. 摘要通過(guò)引入一種先驗知識，研究了毫米波交流全功率輻射計低頻信號失真的補償問(wèn)題。
- Low frequency GMI measurements after longitudinal AC and pulse current Joule-heat treatments indicate that the heat treatment has obvious influence on GMI effect, which showed diversified characters. 縱向交流電流及脈沖電流焦耳熱處理后的低頻GMI測試表明：熱處理對材料GMI效應有明顯的影響，其變化非常豐富，發(fā)現了一些新現象。
- An high frequency AC converted from DC is provided to a transformer and a set or multisets of voltage shall be produced . 將直流電轉化為高頻率的交流電提供給變壓器進(jìn)行變壓，從而產(chǎn)生所需要的一組或多組電壓。
- This effect is obvious at lower frequency band. 這種效應在振動(dòng)低頻區段更為顯著(zhù)。
- At low frequencies, the DC resistance of a given conductor is essentially the same as its AC resistance. 在低頻情況下，給定的導體的直流電阻實(shí)際上與其交流電阻一樣。
- If it is a low frequency sound, it is processed as an analog signal. 對低頻聲進(jìn)行傳統的處理。
- A novel topologic structure of high frequency AC pulse density modulation converter is proposed,and its operation principle,control scheme and design are described in detail. 提出了一種新穎的高頻交流脈沖密度調制變頻器的拓撲結構，并詳細闡述了工作原理、控制方案和設計方法。
- The direction of the low frequency current with maximum frequency was also WSW. 低頻流出現頻率最多的方向和潮流基本一致。
- Medium SMES (200 MVA) are able to compensate some low frequency disturbance. 中型SMES(200MVA),這類(lèi)SMES能補償某些低頻度的擾動(dòng)
- Helmholtz resonator has a good noise eliminating performance at low frequency. 亥姆赫茲共振腔具有良好的低頻消聲性能,被廣泛地應用于低頻消聲方面。
- Armstrong was forced to use avery low frequency barely above audibility. 當時(shí)這樣的頻率被認為是“高頻”，但只不過(guò)是現在所用調幅波段的底部而已。
- Peak indicator light and LF (low frequency) switch per mono channel. 每路單聲信道具有峰值指示燈及低頻切除開(kāi)關(guān)。
