echolocation

noun

1. （尤指海豚、蝙蝠等动物的）回声定位
   the use of reflected sound waves for finding things, especially by creatures such as dolphins and bats

1. N-UNCOUNT 回声定位;回声探测
   Echolocation is a system used by some animals to determine the position of an object by measuring how long it takes for an echo to return from the object.
   1. Most bats navigate by echolocation.
      大多数蝙蝠靠回声定位来飞行。

1. Most bats navigate by echolocation.
   大多数蝙蝠靠回声定位来飞行。
2. Previous research suggested that these marine mammals could dull their hearing before uttering outgoing echolocation clicks, which are very loud.
   之前的研究显示这些海洋哺乳动物向外发射很吵的回声时，他们就可以让听觉变得迟钝。
3. With just a few weeks of training, you can learn to "see" objects inthe dark using echolocation the same way dolphins and bats do.
   只需经过几周的训练，你便能像海豚和蝙蝠一样通过回声定位法在黑暗中“看见”物体。
4. Shear, clip, blankets, bat, echolocation, pitch, bounce off, prey.
   剪断，发卡，毯子，蝙蝠，回声定位，投掷，大发议论，捕食。
5. Even so, we can hear echolocation clicks from some bats, such as the spotted bats.
   即使这样，我们也能听到一些蝙蝠发出的回声定位声，比如斑纹蝙蝠。
6. In terms of pitch, bats produce echolocation calls with both constant frequencies and varying frequencies that are frequently modulated.
   关于音调，蝙蝠用恒定频率和频繁调整的变化频率发出回声定位的叫声。
7. Many bats emit an echolocation call that contains a narrow frequency range and then analyze returning echoes to navigate and to detect prey.
   许多蝙蝠会发出频率范围狭窄的回声定位呼叫，然后分析回声来作导航与侦测猎物。
8. Most bats produce echolocation sounds by contracting their larynx.
   大多数蝙蝠通过收缩喉咙所发出的声音实现回声定位。
9. Echolocation is a highly technical and interesting tactic.
   回声定位是一项具有高度技术性和趣味性的手段。
10. The answer is that they use echolocation or sonar.
    它们用回声定位或者说声纳系统。
11. This coincided with the emergence of echolocation, so improved communication skills likely were tied to the brain size boost.
    与此同时，海豚的大脑有了回声定位的能力.因此，沟通能力的提升也很有可能与大脑体积的增大相关。
12. Some bats have specialized structures for emitting echolocation calls.
    一些蝙蝠已经把用于发出回声定位叫声的结构专门化了。
13. They are one of the few mammals that can use sound to navigate, which is a trick called echolocation.
    它们是极少数能用声音导航的哺乳动物之一，这种导航方式即所谓的回声定位法。
14. Echolocation creates its own images.
    “回声定位法”能自创影像。
15. Martinez isn't the first to recognize the potential for echolocation in humans.
    马汀内斯并非发现人类有回声定位能力的第一人。
16. Coexistence mechanism of two sympatric horseshoe bats ( Rhinolophus sinicus and Rhinolophus affinis) ( Rhinolophidae) with similar morphology and echolocation calls
    形态和声波相似的中华菊头蝠与中菊头蝠的共存机制
17. Howmuch detail a person can "see" with echolocation depends not only onthe speed of their clicks, he said, but also on the frequency.
    利用回声定位“察看”的详细程度不仅取决于嗒嗒声的速度，他说，还与它的频率有关。
18. Correlation Analysis of Nose Leaf Width and Echolocation Domain Frequency in Rhinolophus Bats
    菊头蝠科蝙蝠鼻叶宽与回声定位声波主频率的相关分析
19. Echolocation and Acoustic Communication in Bats
    回声定位蝙蝠及其声通讯
20. Bat has an important status in ecosystem with its unique sound behavior so that it is significant to research the behavior of echolocation.
    蝙蝠特殊的生态位及声行为的独特性，决定了研究蝙蝠回声定位行为的重要意义。
21. This paper preliminarily presents the concept of artificial neural networks and explains how to use this technology, focusing on the study of echolocation calls in bats.
    本文概括地介绍了人工神经网络的概念以及这项新技术的研究方法，并且重点介绍了它在蝙蝠回声定位叫声识别方面的应用。
22. Now researching their echolocation in ecology concentrates in time-frequency characters of signals.
    从生态学角度对蝙蝠叫声的研究多集中在信号本身的时频特性。
23. Echolocation system and flight are two characters which distinguish bats from other mammalians.
    蝙蝠的回声定位系统和飞行是区别于其他哺乳动物的两大特征。
24. Recent researches on Bats 'auditory system and echolocation in China
    中国蝙蝠听觉和回声定位研究进展
25. We studied the echolocation calls and acoustic response properties in the inferior colliculus of the least horseshoe bat Rhinolophus pusillus.
    研究了菲菊头蝠自由飞行状态下的回声定位信号和下丘神经元的声反应特性。
26. Except for echolocation, they also have the ability of powered flight.
    除已经提到的回声定位，蝙蝠还具有主动飞翔的能力。
27. The recombination of flight and echolocation helps bat hunt prey and occupy night niche successfully.
    主动飞翔和回声定位能力的结合，无疑为蝙蝠有效地捕食昆虫及占据夜空生态位提供了有利的帮助。
28. We discussed the adaptive evolution of mammals based on two aspects. One is about the mechanisms of echolocation in whales and bats, the other is on the molecular adaptive evolution of bats dietary switch.
    本论文从两个方面探讨了哺乳动物生存的适应性进化机制，一方面是研究鲸和蝙蝠回声定位的分子适应性进化机制，另一方面是研究蝙蝠食性的分子适应性机制。
29. The main contents are as follows: 1. Bat echolocation system is a highly evolved system.
    本文主要针对以上的问题进行改进，主要内容如下：1.蝙蝠的回声定位系统是一个高度进化的超声探测系统。
30. They use echolocation signal for underwater target detection and recognition and use acoustic signal to communicate between individuals, which is an important tool for them to survive in their living environment.
    中华白海豚利用回声定位信号进行水下目标的探测与识别，通过声学信号进行个体间的交流，声学信号是中华白海豚赖以生存的重要工具。

noun

1. determining the location of something by measuring the time it takes for an echo to return from it

   Synonym:    echo sounding