echolocation 中文意思是什麼

echolocation 解釋
n. 名詞 【物理學】回波定位（法）。

  1. Bat : any of various nocturnal flying mammals of the order chiroptera, having membranous wings that extend from the forelimbs to the hind limbs or tail and anatomical adaptations for echolocation, by which they navigate and hunt prey

    蝙蝠：一種翼手目的夜間飛行的哺乳動物，它們具有能從前肢伸到後肢或尾巴的膜狀翅膀，其生理結構能夠靠聲波定位，並以此導航和捕食。
  2. What the hell is that ? - echolocation

    到底是什麼東西？ -是回聲定位法
  3. - what the hell is that ? - echolocation

    -到底是什麼東西？ -是回聲定位法
  4. Echolocation and acoustic communication in bats

    回聲定位蝙蝠及其聲通訊
  5. The echolocation of bats is a major field in the research of bats

    蝙蝠回聲定位的研究一直是國際上蝙蝠研究的重點和熱點。
  6. Utilization of artificial neural networks in the identification of bats ' echolocation calls

    人工神經網路在蝙蝠回聲定位叫聲識別方面的應用
  7. Presently the way of study the echolocation calls of bat is localizated in traditional fourier analysis

    目前對蝙蝠回聲定位信號的研究方法主要局限於傳統的傅立葉分析。
  8. Dwt is testified to be a new effective way in analyzing the echolocation signals of bats

    因此，小波分析是分析蝙蝠回聲定位叫聲的一種有效的新途徑，有其廣泛的應用價值。
  9. Many bats emit an echolocation call that contains a narrow frequency range and then analyze returning echoes to navigate and to detect prey

    許多蝙蝠會發出頻率?圍狹窄的回聲定位呼叫，然後分析回聲來作導航與偵測獵物。
  10. When ben was 3, he began teaching himself echolocation, something he picked up by tossi ng objects and making clicking noises to find them

    班恩三歲時，就自學回聲定位，他丟擲物體再藉由發出舌音去找那些東西，這樣就學會了。
  11. So it is very meaningful to study their echolocation calls in ecology concentrates in researching time - frequency charaters of the signals

    根據調研我們知道，從生態學角度對蝙蝠的叫聲研究多集中在對信號本身的時頻特性研究。
  12. Echolocation calls are usually ultrasonic ranging in frequency from 20 to 200 kilohertz ( khz ), whereas human hearing normally tops out at around 20 khz

    用於回聲定位的叫聲一般是20 200千赫之間的超聲波，而人所能聽到的最高頻率在20千赫左右。
  13. Wavelet analysis because of its good retractility has become an advantaged tool in signal analysis field. we provide a new valid way for studying the echolocation calls of bat by using this tool

    而小波分析則突破了傳統的傅立葉分析方法，利用其在時域和頻域上同時具有的良好的局部性，成為信號分析的一個有利的工具。
  14. These sounds are generally emitted through the mouth, but horseshoe and leaf - nosed bats emit their echolocation calls through their nostrils, there they have basal fleshy horseshoe or leaf - like structures that are well adapted to function as megaphones

    這些聲音一般通過口發出，但具有馬蹄鐵形和葉形鼻于的蝙蝠則通過鼻孔發出它們的回聲定位叫聲，在那裡它們具有非常適合放大器功能的基本的肉質馬蹄鐵或葉狀結構。
  15. There are some intra - species differences in the echolocation calls of myotis daubentoni, myotis ricketti, myotis capaccinii, miniopterus schreibersii parvipes and pipistrellus abramus when they are in different state such as flying, being held, crawing and setting off. the intra - species differences of myotis daubentoni, myotis ricketti are most significant

    櫛鼠耳蝠、大足鼠耳蝠、毛腿鼠耳蝠、普通長翼蝠福建亞種和普通伏翼在飛行、手持、爬行和起飛等不同狀態下的回聲定位聲波均具有一定差異。
  16. The characteristics of echolocating calls of r. yunanensis, r. macrotis, h. pratti and h. bicolor were analyzed and described ; it is the first time in china to do this kind of research. r. yunanensis is native to china, so the research on its echolocation is characteristic of china and provides new data to set up the echolocating calls database in the world

    對雲南菊頭蝠、大耳菊頭蝠、普氏蹄蝠、雙色蹄蝠的回聲定位聲波進行分析，描述其聲波特徵，是國內首次對這4種蝙蝠回聲定位聲波的報導，雲南菊頭蝠是中國特有蝙蝠，對其進行聲波描述具有中國特色，為國際蝙蝠回聲定位聲波庫的建立提供新的數據和資料。
  17. After all, why not just wire the entire sensory system for high - resolution input and eliminate the need to constantly shift the eyes, star, or echolocation frequency

    說來說去，何不將整個感覺系統都裝配成高解析度的接收器，就可以免除不斷移動眼睛、星鼻或改變回聲定位頻率的麻煩？
  18. During the evolution bait flys to avoid competitions with other animals which live in ocean or on land. successful evolution of echolocation system in the sky makes them avoid competitions with birds. so thy occupied a special ecological niche - sky of night

    在進化的過程中，蝙蝠避開與其他海陸獸類的競爭而飛向天空；在空中，回聲定位系統的高度進化使它們避開與鳥類的競爭而占據了獨特的生態位- - - -黑暗的夜空。
  19. Fm sweeping and interpulse intervocal ranging from 23. 6 ms to 443. 8ms. myotis capaccinii use echolocation calls with short duration, long interpulse intervocal, wide fm sweeping and low duty cycle

    6種蝙蝠飛行狀態下的回聲定位聲波均為fm型，一般包括1 3個諧波，能量多集中於第1諧波，第2諧波和第3諧波較弱。
  20. These differences were analyzed to show that the echolocation calls will change greatly so as to adapt to the different flying style, foraging behavior and habitats of bats. 3

    蝙蝠不同狀態下回聲定位聲波存在差異的分析說明，蝙蝠的回聲定位聲波能夠產生較大的變異，其意義在於適應其不同的飛行方式、捕食策略和棲息環境以及捕食獵物的體型大小。
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