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。
The researchers pointed out that low-frequency processes, such as fluctuations in stream flow and groundwater levels, would not usually be apparent to human populations.
研究人员指出，低频过程诸如河流流量和地下水水位的波动，通常不会对人类产生明显影响。
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。
Besides, the improving of observation condition of low-frequency events is discussed.
讨论了改进(超)低频事件的观测条件问题。
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。
Taken the Earth as material of antenna for receiving gravitational wave, the Earth behaves as a low-frequency gravitational detector.
将地球作接收引力波的天线物质，地球就成为了工作在低频段的引力波探测器。
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。
These include enhanced emission of infrared (IR) radiation from the earthquake epicentre, as well as anomalies in low-frequency electric and magnetic
包括从地震震中传出来的经过加强的红外辐射，以及不正常的低频电磁现场数据。
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's a fair point, and I wonder how long it will be before someone installs a low-frequency hum to the bikes to prevent pedestrians from being mowed down.
这是个很客观的观点，而我想着，还得多久人们才能给自行车装一个低频的铃声来防止刹车事故。
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 team recorded data from the Opportunity's accelerometers, and sped up the low-frequency noise 1, 000 times. The result is best described as a sort of grinding noise.
队员从机遇号加速器收录数据，将低频噪声加快速度1000倍，然而结果对这种声音最好的描述是：这是一种轧轧声。
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。
The wires measure 1/5, 000th to 1/25th the diameter of a human hair and are capable of harvesting energy from low-frequency vibrations such as the wind or the flow of currents.
这些管线的直径只有人头发的5000分之一到25分之一，并且能从风和水流之类低频振动中获取能量。
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。
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。
But for materials where you have vibrations, acoustic vibrations, those are low frequency.
但是对于一些有低频振动的材料，如声学振动。
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。
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。
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。
This falls in the extremely low frequency (ELF) range which includes frequencies up to 300 Hz.
这种频率属于极低频的频率范围内，通常极低频的频带范围也在300hz以下。
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。
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。
And the researchers found an excess of low frequency CNV deletions - where part of the genome is missing - in shorter people.
研究人员发现，在个子比较矮的人身上，会出现低发生率拷贝数变异过剩——部分基因组缺失。
And the researchers found an excess of low frequency CNV deletions - where part of the genome is missing - in shorter people.
研究人员发现，在个子比较矮的人身上，会出现低发生率拷贝数变异过剩——部分基因组缺失。
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