acoustic level 中文意思是什麼

acoustic level 解釋
聲級
  • acoustic : adj. 1. 聽覺的；聲學的。2. 助聽的；傳音的。3. 原聲的，不經過電子設備傳聲的。adv. -tically 在聽覺上；在聲學上。
  • level : n 1 水平儀，水準儀；水準測量。2 水平線，水平面；水平狀態；平面，平地。3 水平，水準；水位；標準；...
  1. Benthic foraminifer fauna, ams14c dating and acoustic sub - bottom profile was analyzed in the core ey02 - 2 and ey02 - 1 drilled from the muddy deposit in the middle southern yellow sea and the mid - shelf of north east china sea. considering the results of core qc2 ? dz4 and the standard oxygen isotope curves, we discussed the late - quaterenary paleo - environment evolution, benthic foraminifer fauna, paleo - climate, the climate events and water mass in postglacial period, average sedimentation rates, paleo - water depth, origin of sediments, average sea level rise rate in the shelf of south yellow sea and east china sea. at last we discussed the condition of sea level rise in the east china, green house effect and the protection of coastal zone

    本文根據南黃海中部泥質區和東海中陸架的兩個鉆孔巖芯的古生物、 ams ~ （ 14 ） c測年、淺地層剖面等，參考qc _ 2 、 dz _ 4成果及標準氧同位素曲線探討了黃東海陸架晚第四紀古環境演化、底棲動物群特徵、古氣候、冰後期以來氣候事件、古水團、沉積速率、古水深、沉積物源、海平面平均上升率，討論目前中國東部海平面上升的狀況、溫室效應及海岸帶保護。
  2. The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.

    聲發射源與接收訊號傳感器間的距離以及環境噪聲的電平是選擇頻帶的主要依據。
  3. By modeling of " y " - shaped junction of the compound river channel with an intersection angle 90, the flow velocity and water level at the junction were obtained by use of the acoustic doppler velocimeter ( adv ) and point gauges

    摘要通過製作交匯角為90的復式斷面河道" y "型交匯河口模型，利用三維聲學多普勒流速儀（ adv ）和測針獲取流速及水位數據，對支流河口處的水流流態包括水面形態、水流流速和水流分區進行分析。
  4. Acoustic water level

    聲學水位計
  5. However according to the view of acoustics, click includes mixed frequencies, so further studies are necessary to investigate the physiological significance of amygdaloid modulating effect on the ascending auditory information at the cortical level. in this paper we firstly observe the characteristics of the acoustic response of neurons in a - i evoked by pure tone ; then investigate the influence of la stimulation on the acoustic response of these neurons and the physiological significance of such influence ; revea l the neural pathway mediating this effect with the neurohistological method ; and study the neurotransmitter and its receptor participating in this effect

    本文採用電生理學方法考察大鼠皮層a區神經元純音反應特徵，觀察杏仁外側核（ la ）對a區神經元聲反應的影響，運用神經組織學方法揭示介導這一影響的神經環路，採用多管微電極記錄結合微電泳技術的方法研究參與這種影響的神經遞質及受體，進一步探討了這種調制性影響的生理學意義。
  6. Acoustic liquid level instrument

    聲波液面測定器
  7. The noise generated from lairages can reach 100 dbs. acoustic facilities have been installed to contain the noise level

    牲口欄的噪音高達１ ０ ０分貝，故此，必須安裝隔音設施，以減低噪音外傳。
  8. The design of the torpedo acoustic homing system simulation platform based on hla ( high level architecture ) was proposed for the torpedo acoustic homing system and its battle environment

    摘要針對魚雷聲自導系統及其作戰環境，提出了基於高層體系結構（ hla ）的魚雷聲自導系統模擬平臺設計方案。
  9. These knowledge sources provide information at four levels : phonetic level, lexicon level, language level, and acoustic decoder level

    知識可在語音詞典語言和解碼四個級別上加以提取和應用。
  10. Then analytical measurements of the noise were carried out on both of the turbines by means of modern acoustic apparatus and a conclusion has been found that the noise of the concentrated wind energy turbine is lower than the one of the ordinary wind energy turbine and the root of the trouble to cause noise chiefly originates from the turbine blade. besides, the result of analytical measurement also reveals that the power output both of the wind energy turbines will increase with the increase of the wind speed and unfortunately does the noise too. in order to lower the noise, a measures of noise reduction have been advanced that an active method is to develop a wind energy turbine run at a lower rating of wind speed while the passive method is to adopt a board drilled tiny holes, having established a sound technological basis for the development of a kind of wind energy turbine of low noise and high level in the world

    主要對濃縮風能型風力發電機在正常運轉時，噪聲產生的機理進行了理論分析研究，並與普通型風力發電機的噪聲進行了對比實驗分析；利用現代聲學測試手段對兩類機型進行測試與分析，得出濃縮風能型風力發電機產生噪聲低於普通型風力發電機和葉輪是風力發電機產生噪聲的主要部件的結論；通過對兩類機型的噪聲、輸出功率的測試，得出隨著風速的增加，兩類風力發電機的輸出功率在增加，產生的噪聲也在增加的結論；提出了進一步降低濃縮風能型風力發電機噪聲的措施，從主動降噪方面，研製低額定轉速的發電機；從被動降噪方面，採用微孔穿板的降噪結構；為研究開發一種國際上低噪聲、高水平的風力發電機打下了良好的技術基礎。
  11. Loud, annoying noises have been a " weapon " at the personal level for millennia, but recently the world ' s security and military forces have been using a far more potent sonic weapon known as the " long range acoustic device " or lrad

    尖銳的，令人感到懊惱的噪音作為一個"武器"的歷史長達數幾千年之久，最近世界安全維和軍隊有一種利用有力音波的武器"大范圍聽覺裝置"或lrad 。
  12. Article 26 with regard to industrial equipment that might produce environmental noise pollution, the relevant competent departments under the state council shall, in accordance with the requirements for protection of the acoustic environment and the state ' s economic and technological conditions, gradually include the noise level limits in the national standards and trade standards for products established according to law

    第二十六條國務院有關主管部門對可能產生環境噪聲污染的工業設備，應當根據聲環境保護的要求和國家的經濟、技術條件，逐步在依法制定的產品的國家標準、行業標準中規定噪聲限值。
  13. The influences of the rotation of drops forced by orthogonal acoustic waves and the surface vibration on undercooling are analyzed and the conclusion that ultrasound can suppress the undercooling level has been drawn

    分析了聲場對過冷度的影響，認為聲波引起的樣品表面振動以及試樣的繞軸自轉都會抑制過冷度的進一步提高，不利於深過冷條件的獲得。
  14. Then acoustic radiative pressure level is computed with a 3 - d fe acoustic - field model and bounary conditions imported from the result of vibration response by infinite fem

    建立齒輪箱外聲場二維有限元模型，導入齒輪箱振動響應結果作為聲學邊界條件，並採用無限有限元法計算了輻射聲壓級。
  15. On the other hand, zhou shaoci et al proved that amygdala could effect the acoustic response evoked by click on mgb and cortex level

    因此，使用純音作聲刺激，進一步研究杏仁體的效應及意義就顯得很有必要。
  16. The propagation characteristics of underwater acoustic channels and their influences on long - range information transmission are studied thoroughly. based on the sonar equation, the optimal frequency band is abtained. from the calculation about transmission loss, the source level is forecasted. based on the random time varying channel theory, the fading characteristics of long - range underwater acoustic channels are analyzed

    系統、深入地研究了水聲通道特性及其對水聲遠程信息傳輸系統的影響；從聲納方程出發，確定了系統的最佳工作頻段；在聲傳播損失計算的基礎上，給出了聲源級的預報；基於時變通道理論，描述了遠程水聲通道的衰落特性。
  17. Determination of optimal threshold level for surface acoustic wave id - tags

    無線聲表面波辨識標簽最佳判決電平的確定
  18. In 2003, jiefu cooperated with china nanjing university acoustic school to develop the intelligentize instant dummy monitor and control system sound qm lt, this project had supplied a gap in china and also reached up to international lead level

    2003年，公司和中國南京大學聲學研究所合作研製的「智能化電聲在線虛擬測控系統sound qmlt 」 ，填補了國內此項技術的空白，更是達到了國際領先水平。
  19. Most present acoustic level gauges use a sound generator which can produce high - power acoustic waves and a microphone which can detect the echo signal. the fluid level can be worked out based on the artificial analysis of the echo curve

    目前正在應用的井下液位測量儀器，主要是通過爆炸聲源產生大功率聲脈沖信號，利用微音器接收回波信號，人為地對回波信號曲線進行分析來估算液位。
  20. Therefore the acoustic level of a hard drive must be virtually below the threshold of human hearing whether the drive is idling or performing multiple stream functions

    因此，無論硬盤是閑置，還是在執行多個流媒體操作，硬盤的噪音必須降到最低水平，實際上要低於人類聽力的下限。
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