水下聲道 的英文怎麼說

中文拼音 [shuǐxiàshēngdào]
水下聲道 英文
underwater acoustic waveguide
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 下 : 下動詞1. （用在動詞后,表示由高處到低處） 2. （用在動詞后, 表示有空間, 能容納） 3. （用在動詞后, 表示動作的完成或結果）
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  1. Digital speech technology has been widely used in many fields of communications in recent years, but it is just at beginning to use acoustical wave to implement underwater digital speech communications, which mainly results from the bandwidth - limited underwater acoustic communications channel and its high temporal and spatial variability

    目前，數字語音技術已廣泛應用於許多通信領域，但是在水下利用聲波進行數字語音通信卻是剛剛起步的新技術，這主要是由於水聲通道有限的通信帶寬及其時變、空變等特性所決定的。
  2. " the best way, sir, " said the deck hand, " is to say nothing about it. if the other fellows knew i ' d pulled you out, they ' d chuck me in.

    「最好的辦法，長官， 」這名水手說， 「是別聲張這事。如果其他人知道我救了您，他們會把我扔下去的。 」
  3. I heard the whoop again ; it was behind me yet, but in a different place ; it kept coming, and kept changing its place, and i kept answering, till by and by it was in front of me again, and i knowed the current had swung the canoe s head down - stream, and i was all right if that was jim and not some other raftsman hollering

    喊聲不停地傳來，又不停地更換地方，我呢，不停地答應。到后來，又轉到了我的前邊了。我知道，是水流把獨木船的船頭轉到了朝下游的方向，只要那是傑姆的喊聲，並非是別的木筏上的人叫喊聲，那我還是走對了。
  4. On the first day, when, getting up early in the morning, he came out of the shed into the dawn, and saw the cupolas and the crosses of the new monastery of the virgin, all still in darkness, saw the hoar frost on the long grass, saw the slopes of the sparrow hills and the wood - clad banks of the encircling river vanishing into the purple distance, when he felt the contact of the fresh air and heard the sounds of the rooks crying out of moscow across the fields, and when flashes of light suddenly gleamed out of the east and the suns rim floated triumphantly up from behind a cloud, and cupolas and crosses and hoar frost and the horizon and the river were all sparkling in the glad light, pierre felt a new feeling of joy and vigour in life such as he had never experienced before

    第一天，他一大早就起了床，走出棚子，頭一眼就看見新聖母修道院開始還發暗的圓屋頂和十字架，看見覆蓋著塵土的草上的寒露，看見麻雀山的丘陵，看見隱沒在淡紫色遠方的，長滿了樹木的，蜿蜒著的河岸，他覺得空氣清新，沁人肺腑，可以聽到從莫斯科飛越田野的烏鴉的啼叫聲，一會兒，在東方天際邊，突然噴射出萬道霞光，一輪紅日從雲層里漸漸顯露出來。於是，圓屋頂，十字架露水遠方和那條小河所有這一切都在陽光下閃爍，這時，皮埃爾感覺到一種從來都沒有經歷過的，全新的，生活的喜悅和力量。
  5. Lt is well anown that the multi ? ath effeet results in signal fading and intersymbol interference ( isd, wnich causes great difficulhes in pewces of transndssion in underwater acoushc cotnmnication. in this papef we used frequency diversity method to overcome the problem of signal fading, and used the frequency - hopping method to ebonate the isi caused by multi - path

    水聲通道多途特性引起的信號衰落和碼間干擾是影響水下通信質量的主要因素，採用頻率分集技術可以處理幅度衰落，而跳頻技術則可以簡單、有效地抗多途引起的碼間干擾。
  6. Upon arrival, transfer to hotel for rest. afternoon tour the brazil side of this magnificent water falls, witness the spectacle torrential down pour, with some cataracts as high as 250 feet

    下午觀賞巴西境內瀑布，可沿步道看瀑布賞林木，任由水氣沾濕衣襟發際或自費乘艇掠過水簾，感受瀑布懾人聲勢。
  7. The underwater - radio buoy for use as obtaining the ocean " s acoustical parameters is a underwater acoustic signals record system which has long distance radio remote control and data transmit function. the technology key of the dissertation study is that under the requirements of the system the monitor and record equipment on the acoustic source vessel, the monitor and record equipment on control vessel command and control the work slate of the buoy system by radio data transmitting mode of short wave transmitter - receiver

    海洋環境參數獲取浮標監測系統屬于具有長距離無線電遙控?數傳功能的水下聲信號接收記錄系統，本論文研究目標的技術關鍵在於根據系統要求，指揮船和發射船監控記錄設備通過短波電臺以無線數傳方式，對浮標系統的工作狀態進行指揮和控制，浮標則通過同一短波通道向指揮船上報浮標方位、工作狀態、關鍵數據及非常狀態下的報警信號等。
  8. With the characteristics of the underwater acoustic channel, media access control protocols at data link layer adopt the maca protocol which uses rts - cts exchange to solve the hidden and exposed situation and automatically control power

    在數據鏈路層的設計中針對水下聲通道的特點，對于介質訪問控制協議採用了maca協議，它使用rts - cts控制報文握手機制來解決uan中的隱蔽終端、暴露終端以及功率控制問題。
  9. The research consists of several aspects as follows : the characteristics of uwac is analyzed, including the multi - path effect, the doppler shift effect, etc. then the mathematics " model of uwac is given

    研究內容主要包括以下幾個方面： ?分析了多途時間擴展、多普勒頻率擴展等水聲通道的物理特性及水聲通道的數學模型。
  10. Noirtier s eye continued to say, " read. " he resumed : - " the undersigned louis jacques beaurepaire, lieutenant - colonel of artillery, etienne duchampy, general of brigade, and claude lecharpal, keeper of woods and forests, declare, that on the 4th of february, a letter arrived from the island of elba, recommending to the kindness and the confidence of the bonapartist club, general flavien de quesnel, who having served the emperor from 1804 to 1814 was supposed to be devoted to the interests of the napoleon dynasty, notwithstanding the title of baron which louis xviii had just granted to him with his estate of epinay

    他又繼續念道：署名證人炮兵中校路易士傑克波爾貝陸軍準將艾蒂安杜香比及森林水利部長克勞特李卡波聲明：二月四日，接到厄爾巴島送來的一封函件，向拿破崙黨俱樂部推薦弗萊文奎斯奈爾將軍，略謂自一八四年到一八一四年間，將軍始終在聖上麾下服務，路易十八最近雖封他為男爵，並賜以伊皮奈采邑一處，但據說他仍舊對拿破崙皇朝忠心不二。
  11. The traffic noise of a new traffic source - combined overhead road was measuered, and the noise distribution under varied road conditions and different surroundings was compared, anlyzed and discussed. the noise model of overhead road, which with special section such as slope was put forwarded, based on the basic overhead noise model by considering the effects of the special section on the total noise level and distribution

    比較分析了不同路況下及周圍環境下的噪聲分佈情況，在水平段高架復合道路噪聲的豎直分佈模型的基礎上，考慮上下坡段對兩側建築物噪聲分佈的影響，建立了特殊路況下高架復合道路噪聲的豎直分佈模型，預測值與實測值基本符合。
  12. Loo ! nikolay cried in a voice not his own, and of its own accord his gallant horse galloped at break - neck pace downhill, and leaped over the watercourse to cut off the wolfs retreat ; the hounds dashed on even more swiftly, overtaking it

    尼古拉怪聲喊道，他那匹駿馬獨自向山下拚命地跑去，越過一個又一個水坑，攔截那隻狼，幾只獵犬趕過了駿馬，更迅速地疾跑。
  13. This thesis researches the design and implementation of underwater high - speed multi - channel data acquisition and processing system. there are some contents to be presented including designing a set of noise signal generator ; design and implementation of underwater nosie high - speed multi - channel data acquisition and processing system ; programming the windows 2000 device driver cl pci and usb with ddk2000 ; programming user interface of the control of the acquisition and display of the image with vc + + 6. 0

    本論文對高速多通道採集和處理系統的設計和實現進行了研究，論文的主要研究工作包括：設計一套模擬噪聲源；根據水下目標輻射噪聲的檢測和識別要求進行了高速多通道採集和處理系統的設計和實現研究；完成了相應的pci 、 usbwindows2000驅動程序的開發；使用vc + + 6 . 0編寫了採集控制和波形顯示界面。
  14. Because the sonar system have high frequency, high resolving capability and 128 receiving channels, the unit can not only sampling, store and translate the receiving sound - signals, but also have the property of lower power

    由於聲納系統工作在高頻率，並且具有高解析度和128個接收通道，所以水下單元的設計不僅能夠對接收聲信號進行高速採集、存儲和傳輸，而且還具有低功耗， 。
  15. Tcvs integrated the traditional simulation computation with the virtual environment. it is an important part for studying and experimenting in the virtual underwater weapon combat environment

    水聲對抗三通道視景模擬系統將傳統的模擬計算和虛擬環境有機地結合為一體，是水下武器虛擬作戰環境研究和試驗的重要組成部分。
  16. I have me my summer vacation in a town last year. since whose are there. some of my relations, there have a good view for the mountain and river, i think it ' s a great place be to rest, one day when i ride my bike on the small path, this river catch my eye for very clearly but like very deeply, becauese i can ' t see the end of the water, then. some chap shouting make me look at, they catch a a short boy and thow he in the water with a heavily, waiting for a moment yet the boy not up the water, i ' m very worry and jumping in the river, i want float out but some watergrass be enteine my leg and the body is deeper at every movey, i don ' t know past how long time, i feeling one small hand help me break up the watergrass and push me to the surface of the rive, after that i just kown they are hvae a playing who can sit in the swim and make a long time in deep water, but i want cry for the joking, becauese i couldn ' t swim but i have a forget

    去年我在一個小鎮上度暑假，因為那裡有我的親戚，我認為那裡有好山好水是一個靜休的好地方.一天當我在小路上騎著自行車時，一條非常清澈但好像也挺深的小河吸引了我的視線，因為我好像看不到河的底端，這時，一些小孩的叫喊聲因起了我的注意，他們抓住一個矮小的小男孩然後重重的扔進了水裡，待了一小會這個男孩沒有露出水面，我非常擔心就跳進了水裡，我想浮出來，但一些水草纏住我了的腿，我每動一動身體就會越往下沉，我不知道過了多常時間，我感覺有一雙小手幫我弄掉腿上的水草並往水面推著我的身體，后來我才知道他們是在玩看誰在水底呆的時間長的游戲比賽，但我對于著樣的笑話想哭因為我忘記自己了不會游泳
  17. The underwater acoustic channel is very complex where cochannel interference, doppler frequency offsets, narrow bandwidth and time and frequency selective deep fades obstructs the development of high speed and fidelity underwater data transmissions. thus projects of high speed and fidelity underwater signal transmissions become a hotspot in the fields of world academic circles. the conventional serial communication must use adaptive equalizer to combat the multipath in real - time

    海洋水聲通道是一種極其復雜多變的時-空-頻變參通道，其通道窄，強多途干擾，信號起伏衰落嚴重，一直是水下信息可靠高速傳輸的主要障礙，因此如何在水聲通道中高速率準確地傳輸數據，就成為世界性的熱門課題。
  18. Pvdf piezoelectric membrane is used as sensitive element for measuring the scalar pressure of the underwater sound field

    而聲壓通道採用pvdf壓電薄膜作為敏感元件，以拾取水下聲場中的標量信息。
  19. A pvdf piezoelectric membrane is used as sensitive element for measuring the scalar pressure of the underwater sound field

    而聲壓通道採用pvdf壓電薄膜作為敏感元件，以拾取水下聲場中的標量信息。
  20. A medium frequency - small size vector hydrophone of co - vibrating type is wrapped with low density compound material and in shuck only one piezoelectric ceramic accelerator is used for each channel to measure the vector components of the underwater acoustic field

    摘要中頻小型同振式矢量水聽器採用低密度復合材料作為矢量通道外殼、壓電加速度計作為內部振動傳感器，以拾取水下聲場中的矢量信息。
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