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- In the study of flow oscillation and discrete frequency noise of impinging jet, it is found that there is a critical pressure ratio for a given nozzle and a nozzle-to-plate distance. 發現對於給定的噴嘴和衝擊距離,存在一個壓比臨界點,當壓比高於此臨界點值時,流場振蕩和離散頻率雜訊被顯著抑制乃至消失。
- While hunting on the3) seabed they emitted a4) weird5) medium frequency noise. 在海底獵食時，們發出一種奇怪的中頻率雜音。
- While hunting on the 3)seabed they emitted a 4)weird 5)medium frequency noise. 在海底獵食時，??欠3.;鮃恢制婀值鬧釁德試右簟
- While hunting on the seabed they emitted a weird medium frequency noise. 在海底獵食時，它們發出一種奇怪的中頻率雜音。
- Applying Volterra functional series and discrete Fourior tansform (DFT) to the system, we can obtain the model of the system in discrete frequency domain. 應用Volterra泛函級數和離散傅里葉變換理論於非線性系統,本文給出非線性系統在離散頻率域的模型。
- The criterions of high frequency noise,background noise and reduce coefficient were presented. 導出了原子光譜高頻雜訊判據，背景雜訊、壓縮係數關係判據；
- Use of high loss ferrite material for excellent high frequency noise absorption. 使用優質高衰減鐵氧體磁芯提高高頻噪音隔離.
- Any of several devices that convert incident electromagnetic radiation of mixed frequencies to one or more discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation. 激光器使偶然的混雜頻率的電磁輻射，變為一個或更多的高度強化和連續的紫外線、可見光或紅外線輻射的分離頻率儀器中的一種
- In sound recording,a low frequency noise usually produced by regular variations in the speed of a system's mechanical component. 錄音技術中的一種低頻雜訊，通常由於系統機械部件的速度有規律變化而引起。
- Only certain discrete frequencies are left without benefit of external stabilization due to the feed system. 只有某些個別的頻率沒有利用供應系統的外部穩定作用。
- By using this method, the impact on depressing the partial vibration and the radiation of the low frequency noise of the structure underwater is efficacious. 採用增大局部結構剛度的方法，對於降低水下結構的局部振動與低頻雜訊輻射效果顯著。
- Synthesize of time domain wave form by summation of harmonics or sinusoidal wave form of discrete frequencies. 以離散頻率之弦波合成時域脈波之波形。
- In sound recording, a low frequency noise usually produced by regular variations in the speed of a system's mechanical component. 錄音技術中的一種低頻雜訊，通常由於系統機械部件的速度有規律變化而引起。
- Helmholtz resonator has a good noise eliminating performance at low frequency.So it has been widely used on low frequency noise reduction. 摘要亥姆赫茲共振腔具有良好的低頻消聲性能，被廣泛地應用於低頻消聲方面。
- The large C1 cap rolls off the gain of the regulator starting at a low frequency so that high frequency noise isn't amplified by the error amp. 這個大的電容C1從一個較低的轉折頻率開始滾降，所以高頻噪音沒有被誤差放大器放大。
- Then the supersonic ejector is used,the high frequency noise will take place when the pressure in store tanks decreases to a specific value,and the environment of . 但使用超音速引射器后,當球罐壓力下降到某一值時會產生高頻雜訊,影響管束區操作環境。
- discrete frequency soft-starting 分級變頻軟啟動
- The results show that WT is an effective method by which high frequency noise and baseline drift in NEMG can successfully be eliminated by selecting proper transform scales of WT. 結果表明，在應用小波變換處理NEMG信號過程中，只要適當選取變換尺度就可以在處理信號的同時，有效地消除原信號中高頻雜訊和基線漂移的影響。
- Any of several devices that convert incident electromagnetic radiation of mixed frequencies to one or more discrete frequencies of highly amplified and coherent ultraviolet,visible,or infrared radiation. 激光器使偶然的混雜頻率的電磁輻射，變為一個或更多的高度強化和連續的紫外線、可見光或紅外線輻射的分離頻率儀器中的一種。
- The improvement on the edf for the higher frequency noise is better than that for the lower frequency noise in the overlapping estimators and the total estimators. 而相應的重疊估計和總方法估計與之相反，雜訊的頻率越高，其等效自由度越大，這也說明重疊估計和相應的總方法估計對高頻雜訊等效自由度的提高優於低頻雜訊。
