您要查找的是不是：
- While hunting on the3) seabed they emitted a4) weird5) medium frequency noise. 在海底猎食时，们发出一种奇怪的中频率杂音。
- While hunting on the 3)seabed they emitted a 4)weird 5)medium frequency noise. 在海底猎食时，??欠3.;鲆恢制婀值闹衅德试右簟
- While hunting on the seabed they emitted a weird medium frequency noise. 在海底猎食时，它们发出一种奇怪的中频率杂音。
- The generalized harmonic wavelet can analyze signals in random frequency band, and ensure the frequency resolution unchangingly by a generalized harmonic wavelet transformation. 摘要将二进谐波小波推广到广义谐波小波后，能够对信号的任意频段进行分析，且能够保证信号经过广义谐波小波变换后其频率分辨率保持不变。
- The criterions of high frequency noise,background noise and reduce coefficient were presented. 导出了原子光谱高频噪声判据，背景噪声、压缩系数关系判据；
- Use of high loss ferrite material for excellent high frequency noise absorption. 使用优质高衰减铁氧体磁芯提高高频噪音隔离.
- In sound recording,a low frequency noise usually produced by regular variations in the speed of a system's mechanical component. 录音技术中的一种低频噪声，通常由于系统机械部件的速度有规律变化而引起。
- 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. 采用增大局部结构刚度的方法，对于降低水下结构的局部振动与低频噪声辐射效果显著。
- In sound recording, a low frequency noise usually produced by regular variations in the speed of a system's mechanical component. 录音技术中的一种低频噪声，通常由于系统机械部件的速度有规律变化而引起。
- Helmholtz resonator has a good noise eliminating performance at low frequency.So it has been widely used on low frequency noise reduction. 摘要亥姆赫兹共振腔具有良好的低频消声性能，被广泛地应用于低频消声方面。
- 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. 这个大的电容C1从一个较低的转折频率开始滚降，所以高频噪音没有被误差放大器放大。
- random frequency modulation(RFM) 随机频率调制
- random frequency shift keying/frequency hopping 随机频移键控跳频
- Soiled dishes were piled at random. 脏碟子胡乱地堆放着。
- 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,当球罐压力下降到某一值时会产生高频噪声,影响管束区操作环境。
- 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. 结果表明，在应用小波变换处理NEMG信号过程中，只要适当选取变换尺度就可以在处理信号的同时，有效地消除原信号中高频噪声和基线漂移的影响。
- 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. 而相应的重叠估计和总方法估计与之相反，噪声的频率越高，其等效自由度越大，这也说明重叠估计和相应的总方法估计对高频噪声等效自由度的提高优于低频噪声。
- The most advanced of these is the Active Noise Cancellation system (ANC), which cancels out low frequency noise by playing the opposite wave form through the Bose sound system. 其中最先进的是主动噪音消除系统（非国大），其中取消打通过Bose音响系统相反的波形进行低频噪音。
- The paper applies the technology of wavelet transforming to weaken the noise effect in motor control system and decomposes the high frequency noise component by transforming. 本文应用小波变换可以降低电机控制系统中噪声影响的技术,通过变换分解出高频噪声部分,利用小波收缩的阈值量化方法去掉高频部分,再重构信号从而达到去噪目的。
- The random frequency of the enzyme's recognition sequence(s) (内切)酶的识别序列的随机频率
