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- Dolphins produce a high frequency sound. 海豚可以发出高频音。
- But the timbres present obvious difference;they differentiate into single timbre, dual timbre and complex timbre with a low frequency sound of high amplitude. 但是音色有明显的差异,即分别为单音色、双音色和具有高幅低频声的复合声。
- If this film series is used in He Ne laser, the dual frequency laser with 5MHz beat will be produced. 此膜系用于氦氖激光器 ,可制出频差为 5 MHz量级的双频激光器。
- If it is a low frequency sound, it is processed as an analog signal. 对低频声进行传统的处理。
- There is a whole world of high frequency sound that is silent to human ears. 人类耳朵听不见世界上高频率的声音。
- Dual frequency and amplitudes vibration system may obtain optimal compaction for different quality and course materials. 振动系统：双频率和双振幅设置，保证了整机在压实不同性质、不同厚度的铺层时，均可达到最佳的压实效果；
- In order to improve target detection performance and anti-stealth ability for modern AEW radar, this paper presents a solution of dual frequency aperture sharing. 为了进一步提高现代机载预警 (AEW)雷达的目标检测及反隐身能力 ,本文提出双频带孔径共用的实现策略。
- The method of measuring deep soil moisture by VHF/UHF dual frequency multiple polarization Synthetic Aperture Radar (SAR) consisting of vector network analyzer is proposed. 该文提出了利用由矢量网络分析仪构造的VHF/UHF双频、多极化合成孔径雷达(SAR)测量深层土壤湿度的方法；
- In order to study the optical feedback characteristics at the dual frequency laser, a birefringent external cavity was studied throughboth theoretical analysis and experiments. 摘要为了研究双频激光器的光回馈特性，采用双折射外腔光回馈的方法，进行了理论分析和实验验证，取得了双频激光器中条纹倍频现象的数据。
- The algorithm was presented as a mathematical description independent of any applications and was used to design a dual frequency grating projection profilometry system. 用独立于任何实际应用的一般形式给出了该算法的数学表述 ,并以此为基础设计了一套双频光栅投影轮廓测量系统。
- The hearing aid determines if the sound is a high frequency sound or a low frequency sound. 通过100个滤波器和音素分析器决定哪些声音是高频或低频声,哪些声音是元音和辅音。
- Carpets, curtains and soft furniture absorbs mid range and high frequency sound, and this is preferable. 地毯、窗帘和软的家具会吸收中频和高频的声音，产生较好的声效。
- With the ultra low frequency sound box combination use, may have theacoustics which plentifully shocks. 与超低频音箱组合使用，可产生更加丰满震撼的音响效果。
- Expenses for repairing and maintenance were reduced after the low frequency sound wave deashing device was used. 经采用低频声波清灰装置,减少了检修和维护的费用。
- This paper introduces a new method for both producing and controlling the frequency difference of a dual frequency laser by using an electromagnetical force which is applied onto the window plate. 提出和研究一种新的方法，即利用电磁铁的电磁力去产生和控制双频激光器的频差。
- If it is a high frequency sound, the signal is moved to a special DSP processor that determines where the sound needs to be compressed to. 通过特殊的DSP处理器决定高频声应该被压缩到哪里。
- The results showed that the OSB wallbord composed by OSB,air and glass wool had a good sound absorption property,specially for low frequency sound. 结果表明，由定向结构板、空气层、玻璃棉构成的复合墙体在低频率范围内会出现共振现象，吸声性能比单层定向结构板有显著的增加，但在高频率范围内变化较小；
- This is the EQ frequency sound effects, change pitch without altering the reason that everyone (especially beginners) can be assured that the use of EQ. 这就是EQ效果器能改变声音频率而不改变音高的原因，所以大家（尤其是初学者）大可放心地使用EQ。
- By turning up the volume of those high frequency sound waves, and focussing them carefully, they can sometimes break up a tumor inside the body, without surgery. 通过控制这些高频率声波的量，仔细对准它们，有时它们能够杀死身体内的肿瘤，而不用开刀。
- During this process heat energy first converts to unorderly sound waves, then to high frequency sound waves, finally ends up with low frequency sound waves. 这一过程中能量的转化是先从热能到杂乱的声波，接着转化为高频声波的能量，然后完成从高频能量到低频能量的转化，直到整个系统的稳定。
