This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
正是由于这种集声，即使是海洋中相对微弱的声音，尤其是低频声音，也能传播数千英里。
What is needed is a system that USES low-frequency radio waves.
这需要的是一种利用低频无线电波的系统。
It is designed to detect the low-frequency radio pulses emitted by lightning strikes.
这一系统旨在感应雷击产生的低频射电脉冲。
The team has already shown that low-frequency magnetic pulses can inhibit false memories, also by temporarily inhibiting the left ATL.
这个团队已经研究出，通过低频脉冲磁场来暂时抑制左前颞叶也能抑制虚假记忆。
At ground level, such vibrations-akin to low-frequency sound waves-are very small, only about the size of the vertical motions that produce them.
在地表，这种类似于低频声波的振动非常小，只相当于造成它们的垂直振动的幅度。
AD7714 is a complete analog front end for low-frequency measurement applications.
AD 7714是一个完整的用于低频测量应用的模拟前端。
The low-frequency fluctuation periods and the initial amplitudes have close relationship in the resonance interaction.
三波共振相互作用低频振荡周期与初始扰动振幅有很强的相关关系；
There is inadequate evidence in experimental animals for the carcinogenicity of extremely low-frequency magnetic fields.
超低频磁场对实验室动物致癌性证据不足。
The inertial cavitations near the surface of skin play important roles in the transdermal enhancement of low-frequency ultrasound.
发生在皮肤表面附近的惯性空化作用在低频超声增透效应中发挥主要作用。
CT scans of Parasaurolophus' crest reveals the animal likely trumpeted low-frequency sounds that traveled well within a dense forest environment.
用CT扫描副栉龙的冠饰，我们会发现这种动物会发出低频音，可以传向浓密的丛林深处。
Crewed by civilians, Impeccable is equipped with an active low-frequency towed array with a series of modules, each housing two high-powered transducers.
“无瑕号”由平民操作，装备有主动探测的低频声纳，具备一系列的模块，每一模块配有两个大马力的传感器。
It is also shown that after the derivation of seismograms, high-frequency contents are ameliorated in some degree while low-frequency contents are damaged surely.
同时还表明，对地震记录求导以后，虽然对高频成分有所提升，但与此同时又压制了低频成分。
Some residents and visitors in the small city of Taos, New Mexico, have for years been annoyed and puzzled by a mysterious and faint low-frequency hum in the desert air.
美国新墨西哥州小城陶斯的部分居民和访客多年来一直为沙漠空气中一个神秘而微弱的低频嗡嗡声而苦恼和困扰。
The digital portion includes low-frequency video, the pulses that keep receivers synchronized with transmitters, and the audio signal for high-quality stereo sound.
数字部分包括低频视频(使接收机与发射机保持同步的脉冲)以及用于高质量立体声的音频信号。
Torres-Sanchez, along with colleagues at Strathclyde University, is experimenting with low-frequency ultrasonic irradiation to ‘excite’ molten polymers as they begin to foam.
托雷斯 -桑切斯，与斯特拉斯克莱德大学的同事一起，正在试验当聚合物开始冒泡的时候，用低频率的超声波照射来“激发”熔融聚合物。
Ackermann suspects that this may be because the right brain is specialized for processing low-frequency information, which is typical of speech, but this theory is still unproved.
Ackermann怀疑这可能是因为右侧大脑专门负责处理低频率的信息，说话就是很典型的一种，但这个假说还没被证实。
Objective: To approach the feasibility of the three-dimensional positioning and navigation with regular catheter electrodes in intracavitary with a low-frequency electrical field.
目的：探讨基于低频电场方式进行心腔内三维定位导航及心内膜重构的可行性。
The researchers have devised a method that allows the generation of energy by converting low-frequency vibrations from body movement, heartbeat, blood flow, and the wind into electricity.
这项研究成果可以将人体移动，心跳，血流等低频振动转化为电能。
The other problem is that submarines receive messages using low-frequency radio waves that can penetrate water, but only a few characters per second can be transmitted at these frequencies.
另一个问题时潜艇在水下时用低频进行通信，因为低频可以穿透海水传播，但用低频通信时，通信速度只能每秒几个字符。
The catch is that because low-frequency waves can travel great distances, when they do bounce off cavities or objects underground, they often end up far from the detection equipment at the surface.
捕捉过程是这样的，因为低频波可以传输到更远的距离，当它们遇到地下的空穴或其他物体反射回来的时候，已经距地面的接收装置很远了。
So, similarly in a case where instead we have a small energy difference, we're going to have a low frequency, which means that we're going to have a long wavelength here.
在这个例子里，能量差较小，我们得到的频率低，这意味这它的波长更长。
the low frequency for certain sets of data, such as national accounts and BOP [balance of payments].
某些数据发布频次低，如国民经济核算和国际收支。
Birds, for example, are said to be able to hear low frequency sounds bouncing off mountains hundreds of kilometres away.
以鸟儿为例，据说它们能够听到来自千里之外的山谷里的低频回声。
In the wild, elephants often need to communicate over long distances, using low frequency calls to keep tabs on other members of their group.
在野生环境中，大象经常要在距离很远的时候，彼此进行沟通和交流，这时它们会使用低频叫声和同一象群中的其它成员保持联系。
It is called delta sleep because of the presence of high amplitude, low frequency delta waves that are seen to occur in the EEG.
这个阶段的脑电图以高幅低频的三角形delta波为主，所以被称为Delta睡眠。
It is called delta sleep because of the presence of high amplitude, low frequency delta waves that are seen to occur in the EEG.
这个阶段的脑电图以高幅低频的三角形delta波为主，所以被称为Delta睡眠。
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