透聲率 的英文怎麼說
中文拼音 [tòushēnglǜ]
透聲率
英文
acoustic permeability-
The frequency respond to : the brief name rings, and measure a device right high, the inside, frequency for ability for even emersion of signal, general enlarger of low and each segment respond to and should attain the the. ear that excluding the person is out of hearinged, but skin etc. the other sensory apparatus it can feel. for example thunder, the frequency of the thunder voice is low, person ear can hear few, but we can feel the fierce vehemence of that kind of manner, and can have to grow the center of chest however spirit felling that come. this make the perfect new of science spirit, summer that re - appear of orotund details the the dollar of superior quality adoption the for piece with careful electric circuit designing, frequency scope attaining the the, can like this satisfying broadcasting the true of this new and high of of or of ring the request
以外人的耳朵聽不到了，但是皮膚等其它感覺器官能感覺到。例如打雷時，雷聲的頻率比較低，人耳所能聽到的很少，但我們能感覺到那種來勢兇猛的氣勢，會有種胸口透不過氣來的感覺。本著使聲音細節完美重現的科學精神，夏新採用優質的元器件和嚴謹的電路設計，頻率范圍達到，這樣就能夠滿足播放或這類新型高保真音源的頻響要求。On the base of studying imaging theory of lens, the imaging theory of laser confocal scanning microscopy was analyzed in detail in this paper, and the advancement of that the optical fiber was applied to the system was described ; on the base of completed the demonstration for whole project, the experiment scheme was designed ; the relationship between the main parameters of key devices and the resolution was deduced, and the requirements of coupling efficiency and vignetting effects to optical system was analyzed ; the design of optical system and the planar scanning controlling circuit was completed ; a new method was put forward to resolved the inherent non - liner scanning problem of the galvanometer scanner by using software liner controlling in circuit design, and the perfect planar scanning was realized ; at last the low noise, high multiple and non - distortion amplify circuit of photoelectric detector was completed
本文在透鏡成像理論的基礎上，系統、深入地分析了共焦掃描顯微成像的機理，論述了應用單模光纖的激光共焦掃描顯微成像系統的優點；進行了總體方案的論證，並設計確定了單模光纖激光共焦掃描顯微成像系統的總體方案；從理論上推導分析了解析度要求與試驗系統中相關器件主要參數之間的關系，分析了系統耦合效率和漸暈現象對光學系統的設計要求；完成了方案中光學系統和二維掃描控制電路的設計，並在電路設計中採用了用軟體解決檢流計式光學掃描器（振鏡）非線性問題的新方法，能夠實現較為理想的二維模擬掃描；完成了高增益、低噪聲和低失真的探測接收系統的設計和調試。O enhance operational efficiency of the existing ticketing system and to streamline the maintenance procedure, east rail will spend $ 16 million on the purchase of 38 new ticket vending machines, of which 12 will be equipped with braille and audible functions for the convenience of visually impaired passengers
為提高現有票務系統的運作效率及簡化維修程序，東鐵將耗資一千六百萬元購置三十八部設計新穎的自動售票機，其中十二部為點字發聲自動售票機，視障人士可透過售票機的發聲指示，輕易購票。Sound waves from the iceberg had a frequency of around 0. 5 hertz, too low to be heard by humans, but by playing them at higher speed the iceberg sounded like a swarm of bees or an orchestra warming up, the scientists said
據路透社11月24日報道，科學家表示，從這座冰山傳來的聲波頻率大約為0 . 5赫茲，遠遠沒有達到人耳的聽力范圍。但科學家加速播放聲波錄音后發現，這座冰山能發出一種類似大群蜜蜂的嗡嗡聲或者管弦樂隊演奏前熱身的聲音。It is studied that small inclusions in aluminum alloy are detected by ultrasonic transmission method in this paper. frequency analysis of the ultrasonic signal is done. harmonic factor and relative valid spectral power are calculated
本文採用超聲穿透法對ly12鋁合金板材細小夾雜物進行了檢測試驗研究，並對超聲信號進行了頻譜分析，計算了諧波系數和相對有效譜功率。Conclusion the water - filled colon can be used as the acoustic window of extrahepatic bile duct, which makes the ultrasonic diagnosis much more sensitive to the extrahepatic bile duct obstruction
結論被生理鹽水充盈的結腸確能作為肝外膽管的透聲窗，從而使肝外膽管梗阻病變的超聲顯示率顯著提高。Currently, zno is attracting attention for its application to uv light - emitters, varistors, transparent high power electronics, surface acoustic wave devices, piezoelectric transducers, gas - sensing and as a window material for display and solar cells
目前， zno由於在紫外光輻射、變阻器、透明高功率電子器件、表面聲波器件、壓電傳感器、氣敏傳感器及作為顯示器件和太陽能電池窗口材料方面的廣泛應用而引起人們極大關注。The result of the experiment indicated that the capability of adsorption decrease with ultrasound intensity, while the rate of the extraction and adsorptin increase. the model resulst also showed that the theoretical value of the homogeneous model considering intrapartical diffusion and outside - surface diffusion with freundlich phase equilibrium equation are agfeeable with the experimental value
在吸附實驗中，測定了不同強度超聲場下梔子甙與1300樹脂上吸附平衡曲線、靜態吸附動力學曲線、動態穿透曲線。實驗結果表明，吸附容量隨著超聲波強度的增加而減少，而浸取、吸附速率隨著超聲波強度的增加而增大。Thirdly, considering when acoustic wave with a certain frequency or angle is incident upon plates, it will greatly cause the radiation power " translating. this paper details the causes of coincident effect and gets the calculating formula. the conclusion is resulted that thick plate and uniaxial anisotropies can lower critical frequency
針對聲波入射板面時在某一特定頻率或特定入射角度時會使聲輻射能力大大增加並產生聲能的大量透射這一現象，詳細討論了產生吻合效應的條件；並針對工程實際中所應用到的各種尺寸、材質的板分別推導了其吻合頻率和臨界頻率的計算公式，得出了厚板和材料的各向異性均會使結構的臨界頻率下降的結論。Second, introduce the dyadic wavelet analysis, and use it realized the signal monitor and analysis to the turbine compressor, obtained the detail signal and approach signal at different frequency parts of the compressor s original signal. one type of electromotor that made in china is choose, and it s noise is tested. the noise signal is analyzed by wavelet analysis and spectrum analysis. several high spectral peaks that make people hearing disameniry are found. by contrast with theory calculating results and farther analysis. the cause that producing these spectral peaks is located
其次，介紹了二進小波分析，並應用二進小波分析實現了對透平壓縮機信號的監測分析，得到了壓縮機原始信號在不同頻率段分解的細節信號和逼近信號。用小波分析和譜分析相結合的方法對某國產電機的噪聲進行了分析，找出了人的聽閾不閱的幾個高譜峰位置，進行了空氣動力噪聲計算，通過與理論計算結果進行對比分析，進一步找出了產生該頻閩譜峰的幾個原因，第三，介紹了諧波小波和分形的基本原理。A method where the direction of light passing through a crystal is changed using a high frequency sound wave
在那裡光的指示過去的一種方法透過一顆晶片被使用高的頻率聲波改變。The fact that grain of sand is fine or silty, with thin layer and little - scale scours means that the water energy was low. grain analysis tells its transiting character between turbulent flow and drag flow with the same character as sub - fan. in the core, every sequence is positive rhythm and debris flow that is not developed in delta was also found
巖電關系分析表明，孔隙度與聲波時差成正相關關系，與自然伽瑪呈負相關關系，而滲透率與孔隙度具有較好的指數關系，據此建立了解釋模型，在測井數據標準化的基礎上進行了測井解釋，較為準確地反映了井點處的物性特徵。分享友人