衰減測定 的英文怎麼說

中文拼音 [shuāijiǎncèdìng]
衰減測定 英文
attenuation measurement
  • 衰 : 衰動詞（衰弱） decline; wane
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 衰減 : attenuation; decay; damping; reduction; rejection; weakening; deamplification; dampening; dying o...
  • 測定 : determine; determination; setting-out; admeasurement; assignment; assay; finding
  1. The log decrement are suitable for determining interface bond damage.

    對數衰減率適宜於測定界面粘結的破壞。
  2. In this article, considering the character of the one - dimensioned continuum and the cross - section, the varied quotiety of the strain can be presented as the mode function to identify the damage. and inversion of the elastic wave is presented to detect the injures when the area is the variable of the inversion, for the pip usually buried under the earth or enwrapped into the protection make the detection difficulty by the mode of vibrancy. the influence of the area must be considered if the exactness is the pre - requisition

    在論文中，考慮到壓力管道的一維性質，提出用應變模態改變變化率的方法對一維的結構進行損傷識別；同時考慮到在實際的工程和現場測試中，壓力管道大多深埋在地下或者有外在的保護膜，不宜進行模態的檢測，所以也考慮利用彈性波的方法對壓力管道的性質參數和截面性質進行反演識別，從而得到我們感興趣的東西，達到損傷識別；一般，在利用彈性波反射方法進行損傷檢測中，不考慮截面效應對彈性波的衰減影響，這就對損傷檢測造成一定的影響，本文考慮截面效應的影響，通過實驗來確定截面效應系數。
  3. Some by - products of this work can be used as routine tools in the uv laser laboratory. commercial video ccd cameras are used to image uv laser and soft x rays, window glass as a fluorescer is used to indirectly measure the uv laser beam profile with high energy density, and a special glass which permits uv light to pass through while absorbs the visible, is introduced into the uv beam profiling in strong visible stray light environment

    實驗中發展了一些測量技術，例如用可見光視頻ccd直接測量紫外激光的光束分佈和激光等離子體產生的x光二維圖象，利用窗玻璃作為熒光體測量能量密度較高的紫外光束分佈，利用可見吸收紫外透射玻璃製成的衰減器測量有嚴重背景光的紫外光束分佈，可以作為實驗室的常規測量工具，並有一定的推廣價值。
  4. The investigation of a lot of parameters about treated sandstone, brick materials and earthen materials with fluorited polymers has been carried out, such as the formation of polymer, the penetration depth, porosity, capillary absorption and penetration coefficient, water uptake, compressive strength, drilling resistance, absorption isotherms of water vapor, water vapor diffusion, color changes as well as resistance to desegregation of water, frizzing - throwing cycles, worming - cooling cycles, and so on. in addition, the influence of salt crystallization, acid and base, and uv aging have also been assessed in order to better understand the protection effects and utilization possibility of two fluorinated polymers, mainly according to astm standard and the combination of international methods together with general technological

    分別以國家級文物保護單位的土質、砂巖和磚材文物樣品為對象，依據astm標準及國際通用文物保護研究方法與評估準則相結合，通過膠化物形成周期、滲透深度、孔隙度、毛細吸水和滲透系數、持水量、抗壓強度、抗鉆強度、吸附水蒸氣的能力、透氣性、外觀顏色等系列參數的測定，及凍融、冷熱循環、酸堿腐蝕后抗壓強度的衰減、可溶鹽對保護效果的影響、酸堿及光照對表面保護效果的影響，對兩種含氟聚合物及其與有機硅的共混物在文物加固保護和表面防護中的可行性和保護效果給予了系統研究。
  5. Measurement of minority carrier life time in germanium by photoconductive decay method

    用光電導衰減法測定鍺中少數載流子壽命
  6. Standard test methods for minority carrier lifetime in bulk germanium and silicon by measurement of photoconductivity decay

    硅和鍺體內少數載流子壽命測定光電導衰減法
  7. The analysis of data and uncertainty of the test upon different simulant target properties and atmospheric condition has proved that noncooperative regulable attenuation method and setting described in the paper can achieve a quantitative output

    不同目標特性、不同大氣條件下的地面性能驗證實驗數據和精度理論分析結果均表明，非合作目標可調衰減法可以實現對激光高度計最大測程的定量化驗證。
  8. According to the minimum detectable power required by the spaceborne laser altimeter for 200km maximum range and the analysis result of the effect between the maximum range and the equation ' s each parameter, the specifications for noncooperative regulable attenuation setting were fixed on

    根據月球探測激光高度計實現200km所需的最小可探測功率，各影響因子與最大測程關系的分析，確定非合作目標可調衰減法裝置的技術指標。
  9. Based on the analysis of the effect on the maximum range of the equation ' s each parameter and the traditional method of extinction ratio, the noncooperative regulable attenuation - measure the minimum detectable power of laser altimeter on the condition of constant miss probability by attenuating the laser power transmitting to the diffuse reflected simulant target - was put forward

    在傳統的消光系數法基礎上，根據對月測距方程各系數的影響權重分析，提出了非合作目標可調衰減法，即：通過對漫反射模擬目標，衰減出射激光功率，在一定的漏警概率條件下測量激光高度計的最小可探測功率。
  10. We had observed more than ten selected asteroids using 1 - meter telescope in yunnan observatory during 2000 to 2002. the observational data of seven asteroids had been reduced and analyzed. we have derived their synodic periods and estimated the shape and orientation of rotational axis for one asteroid

    為此，我選定了一些直徑在125公里左右的小行星進行觀測和分析；一方面，測定它們的自轉周期，進行「角動量衰減」現象的研究，另一方面，對小行星形狀和自轉軸指向進行估算，為小行星碰撞演化研究提供更為有利的證據。
  11. Optical power meter real - time monitor optical power of each optical cable, and control computer gather the value of optical power attenuation circularly, if some values excess the limit, the computer control optical switch to connect another spare optical fiber with otdr card, control the otdr card to test the optical fiber, and then find the malfunction point accurately. the system require software system to run with hardware devices tother. this paper analyze requirement and technical feasibility in software system, ooa and uml are used to analyze software and abstract the class diagram

    通過光功率計對每條光纜中的備用光纖進行實時的監控，測試光功率的衰減值，主控計算機不斷循環的對每個光功率模塊進行數據採集，並記錄每路光信號的光功率衰減值，然後進行分析處理，如發現達到設定的光功率衰減門限值就報警，並控制光開關的切換，將故障光纜中的另一備用光纖與otdr卡連接，通過otdr卡對該光纖進行測試，從而確定故障點。
  12. Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications

    本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術，主要研究成果包括以下幾方面:首先，建立了利用兩顆地球靜止軌道衛星進行短基線定向的數學模型，分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的精度進行了詳細分析，數學模擬結果表明在高緯度地區線性化解析法由於俯仰角誤差分析精度略有下降而不太適合;在分析定向精度確定性影響因素的基礎上，提出了雙星定向精度衰減因子odop的概念，揭示了雙星定向誤差特殊表現的內部機理，對實際工程應用具有重要的指導意義。
  13. As for a space - based cloud radar, the change of the radar reflectivity n and the change of attenuation rate along with the cloud liquid water content have been compared between 37 ghz and 94ghz. the transmittance t of single level cloud for different heights and liquid water content has also been calculated at 2 frequencies. by defining a = n tr, which combines both effects of radar reflectivity and transmittance, we have examined the values of a at 37ghz and 94ghz for high, middle and low cloud liquid water contents

    對空間測雲雷達，討論了37ghz和94ghz這兩個頻率的雷達反射率和衰減系數隨雲液水含量的變化；計算了不同高度的單層雲在不同頻率，不同含水量情況下的雲層透過率_ ；定義a = _來綜合考慮雷達反射率和透過率對空間測雲雷達回波的影響，分析比較了雲含水量高、中、低時37ghz和94ghz的a值大小。
  14. Laboratory measurement of the reduction of transmitted tapping machine impact sound by floor coverings on a solid standard floor

    用地板面料覆蓋標準固體地板的試驗室測量法測定攻絲機沖擊噪聲的衰減值
  15. In the paper, prescale technology, interpolate method, averaging method and multiple period synchronization method are used to measure the frequency accurately. diode demodulating technology, and power attenuated method or probe coupling & water load technology are employed to measure the power of high power microwave. isothermal technology is used to improve the stability of demodulator and to expend the range of square linear region

    本文採用預分頻法、內插法、多周期同步法、平均法實現了頻率的精確測量;利用二極體檢波技術，結合衰減法或探針耦合+水負載技術實現了大功率微波功率的測量;採用恆溫技術提高了二極體檢波器穩定度;完成了單片機串口通信協議設計和系統電磁兼容的分析和設計。
  16. Due to the uncertainty of factors such as far - range, atmospheric attenuation and operated target, a steady and reliable method and setting to characterize laser altimeter ' s performance is an important and difficult technology

    由於測程遠、大氣衰減、被測目標物等不確定性因素，建立一種穩定可靠的激光高度計性能指標驗證裝置和方法，是一項重要的、必須解決的技術難點。
  17. 3. the new microwave power supply ( mps ) can work in vacuum and its power measurement is convenient. the output power could be adjusted with the change of control voltage, and the reflecting power could be gotten by measuring the output voltage of attenuator and detector

    （ 3 ）可在真空下穩定工作的新型微波源功率的測量較為方便，通過改變控制電壓的大小可以調節輸出功率，通過測量衰減檢波器的輸出電壓信號可實現反射功率的測量。
  18. Testing of fibre optic elements ; determination of attenuation of optical fibres

    光纖元件的檢驗.第1部分:光纖的衰減測定
  19. Catheters for medical use - part 7 : determination of the x - ray attenuation of catheters ; requirements and testing

    醫用導管.第7部分:導管x射線衰減測定.要求和試驗
  20. Standard guide for procedure for measuring ionizing radiation - induced attenuation in silica - based optical fibers and cables for use in remote fiber - optic spectroscopy and broadband systems

    用於遠距離光纖光譜測定和寬帶系統的硅基光纖和光纜電離輻射感應衰減測量程序的標準導則
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