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This kind of liquid state lens are composed of a pair of waterdrop, they expose under the high frequency sound wave travel between the vibration, changes lens' focal distance along with it. 这种液态镜头是由一对水滴组成，它们暴露于高频声波下往返振动，随之改变透镜的焦距。
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。
Dolphins produce a high frequency sound. 海豚可以发出高频音。
high frequency sound wave 高频声波
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。
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。
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。
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。
While high frequency sounds tend to be more hazardous and more annoying to hearing than low frequency sounds,most noise pollution damage is related to the intensity of the sound. 虽然高频声音比低频声音更加危险且恼人，大多数的噪音污染损害却与声音强度有关。
This echolocation, where high frequency sounds bounce off objects giving the bat a picture of the world around it, is purely functional. 回声定位其实属于工作用语，蝙蝠利用从物体反弹回来的超声波，对周围世界有个大致了解。
"Ultrasonics: Vibrational or stress waves in elastic media that have a frequency above 20 kilohertz, the highest frequency of sound waves that can be detected by the human ear. 超音波:弹性介质中的应力波，其频率在2万赫以上，最高频率超出人耳可听闻的声波频率。
Exploration on Low Frequency Sound Wave Harm to Humans'Body 低频声波对人体毁伤机理的探讨
It is said the magic cellphone ringtone, with a frequency of above 8000HZ, can only be heard by people under the age of 25, whose hearing of high frequency sounds have remained unimpaired. 这种铃声的频率在8000赫兹以上，据说只有25岁以下的人能听到，因为青少年的高频听力还没受损伤。
Research on the Directional Technology of the Low- frequency Sound Wave 低频声波定向技术研究
Sound waves are measured by their amplitude. 声波是根据其振幅来测量的。
Where there is a sound,there is sound wave. 哪里有声音，哪里就有声波。
Although low frequency sound travels further than high-frequency sound,calls at higher frequencies give the bats more detailed information such as size,range,position,speed and direction of a prey's flight. 尽管低频声音比高频率的声音传播远，但高频叫声使蝙蝠能获得诸如大小、范围、位置及猎物飞行的速度和方向等更加详细的信息。
Where there is a sound, there is sound wave. 哪里有声音，哪里就有声波。