衰減因素 的英文怎麼說
中文拼音 [shuāijiǎnyīnsù]
衰減因素
英文
af-
Factors of capacity decreasing and development of research on performance changing of spieled limn2o
4容量衰減因素及改性研究進展The paper has founded the model of laser transmission in launch process and the movement model of laser - powered vehicle, and has analyzed the influence on performance of launch system, which was raised by some factors, for instance, the performance of thruster, the attenuation in transmission, the height of mode - transform, the laser power, the air drag force, the launch height, and so on
本文研究了激光推進微小衛星發射系統的概念和性能。建立了發射過程激光傳輸和激光推進運載器運動模型，分析了推進系統性能、大氣傳輸衰減、模式轉換高度、激光器功率、大氣飛行阻力、發射點高度等因素對發射系統性能的影響。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。Main conclusions drawn from the analyses of calculating results are as follows : ( 1 ) the microwave absorption of atmosphere gas have obvious attenuation at the wavelengths for cloud detection, thereinto, the water attenuation effect changes greatly, so the 94ghz cloud detecting radar should have water vapor attenuation correction scheme. ( 2 ) when 37ghz and 94ghz radars detect clouds, the difference between the atmosphere and cloud attenuation and the large variety of radar reflectivity conduce the intension of the radar backscatter signals change. ( 3 ) for the thin cloud layer and low water content of cloud, 37 - ghz radar backscatter signals are not as good as 94 - ghz radar, that is to say that the 94ghz radar has better capability in thin clouds detection
本工作得出如下結論： （ 1 ）大氣氣體的微波吸收在測雲波段產生明顯的衰減，其中水汽衰減效應變化很大；即將上天的空間94ghz測雲雷達必須有水汽衰減訂正方案； （ 2 ） 37ghz和94ghz雷達測雲，由於大氣和雲衰減不同和雷達反射率的很大差異，導致雷達回波信號強弱不同； （ 3 ）對雲層較薄、含水量較少的雲，在不計雷達參數的情況下， 37ghz雷達回波信號不如94ghz測雲雷達，也就是說94ghz對薄雲有更強的探測能力；對雲層較厚、含水量大的雲，由於強衰減的作用， 94ghz雷達回波信號小於37ghz雷達； （ 4 ）從大氣衰減的不利因素方面考慮，空間94ghz雷達測高層薄雲的效果最好；測低層薄雲時需要考慮氣體衰減訂正；因濃厚雲的強衰減作用，探測其中下部的能力大大減弱，不僅要進行衰減訂正，而且要藉助其他信息來反演整個雲層的含水量垂直分佈； （ 5 ）為了獲得從極薄到極濃厚雲的垂直分佈探測能力，未來測雲雷達系統最好採用雙波長甚至三波長（如94 、 37和13ghz ） 。The records we used are mainly from three parts : strong ground motion data before 1992 ' s ; data from scec ( south california earthquake catalog ) ; nsmp ( national strong motion project ). after we developed the attenuation laws, we analysis the attenuation characteristics for the pga and sa with different damping ratio. here we mainly concentrate on the effect of the distance and the magnitude
在回歸出中小地震的衰減關系后，本文對峰值加速度（水平向與垂向） 、加速度反應譜（阻尼比分別為0 . 005 、 0 . 02 、 0 . 05 、 0 . 1 、 0 . 2 ）的衰減特性進行了分析，影響因素主要考慮了震級與距離這兩個方面。Hydrometeors have dominant effect on the performance of systems operating at frequencies above loghz, and the remote sensing of hydrometeors is an important subject for radio propagation, radar meteorology and atmosphere physics etc. based on the physics characteristics of rainfall, fog and clouds, the propagation characteristics and remote sensing of hydrometeors are investigated and discussed
水凝物是影響10ghz以上頻段系統性能的主要因素，它是電波傳播、雷達氣象、大氣物理和環境遙感等學科研究的重要對象。本文基於降雨和雲霧的基本物理特性，對降雨和雲霧的毫米波傳播特性、降雨和雲霧的遙感以及霧的紅外輻射衰減特性進行了分析和研究。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。Express the factors resulting in the attenuation of acoustic waves
敘述引起音波衰減的因素。" there are external factors such as obstructive home environment and risky habits, and internal factors such as degeneration, general weakness and poor balance, and side - effects of medicine, leading to falls in elderly
長者跌倒的外在因素有多障礙物的家居環境、危險生活習慣等；內在因素則有身體機能衰退、力量及平衡力減弱及藥物影響等。Congestive heart failure is a syndrome that is usually initiated by a reduction in pump function of the heart, i. e. a decrease in cardiac output
摘要心力衰竭是以臟泵血功能降低（心輸出量減少）為始動因素的臨床綜合徵。The system can resolve the noise and impedance on the power line and obviously improve the abilities of anti - disturbance and successful rate of communication. at the same time, the software realy method and arithmetic is also introduced to settle the problem of attenuation and increase the distance of carrier communication, it can satisfy the need of remote reading meter system
該系統有效地克服了電力線噪聲和阻抗變化等干擾因素，提高了抗干擾能力和通信成功率，同時提出軟體中繼的思想和演算法並加以實現，進一步抑制了線路衰減快的問題，使載波通信的距離增加，滿足了遠程抄表系統的要求。We think increase of the internal resistance of battery is the main problem to the recycle life deteriorating at high rate, besides the influence of the materials. decomposition occurred on positive and negative electrode at high rate current and the interspaces increased. the restrains of swelling and the increase of an oxygen overvoltage can improve the performance of recycle life
對于電池性能衰減的原因，認為除了所使用的材料是影響電池性能的重要因素之外，在溫度和大電流作用下，電池的正負極材料發生裂解，極片內空隙增大，電池內阻性能惡化是引起電池高倍率循環性能惡化的關鍵;通過抑制正極析氧和膨脹，並降低負極合金材料的粉化過程，將有望緩解電池內阻特性的惡化，從而提高電池高倍率充放電循環性能。Abstract : the time - variant reliability analysis of ship hull girders subjected to the deg r adations of fatigue and corrosion is quantitatively carried out in this paper. th e analytical formulations are derived and simple program is compiled. as a case s tudy, the time - variant reliability of a vlcc tank is calculated. it shows that th e degradation effects of fatigue and corrosion are very important for the load - c a pacity calculation of thsip hull girders. after the second special inspection ( 10 years ), the detailed inspection should be done in order to guarantee the safety of ship navigation
文摘:定量考慮船體構件疲勞裂紋擴展和環境腐蝕對船體梁承載能力的雙重衰減因素的影響，對船體梁的時變可靠性進行了分析，列出了時變可靠性分析公式並編制了相應的計算程序.以一艘大型油船的結構可靠性為例，表明疲勞裂紋和環境腐蝕在第二個特檢年（ 10a ）之後對船體梁承載能力有顯著的影響，此時開展詳細的船體結構檢查對保證船舶營運的安全性具有重要的意義It is thought that nature - geographical and human - cultural factors are primary besides, hierarchical scales of cities, resource exhaustion, non - independence and deformity of city functions are also importam factors. in real city forms, the marginal attribute that these various factors contribute often presents different characteristics in spatial forms
本文認為，形成城市邊緣屬性的兩個主要的成因是自然地理因素和社會人文因素，另外，城市梯級地位因素、資源衰減因素和城市功能的殘缺性和非獨立性也是形成城市邊緣屬性的重要原因。Models incorporating time - varying covariates enhanced predictive power by reducing misclassification and incorporating day - to - day changes in extra - renal organ system failure and the provision of dialysis during the course of arf
通過減少錯誤分類，加入腎外器官衰竭逐日變化和arf期間透析的提供，這些時間變化因素的加入增加了模型預測力。Corresponding to the correct water hammer mathematic model ( 3 ), the character difference equation is by comparing the new mathematic model with the old mathematic model, the last calculative part of paper argues the falseness of the current water hammer mathematic model, makes use of the improved character line method to analyze the correct mathematic model ( 3 ), studies all kinds of facts " impact on water hammer pressure value and water hammer phenomenon attenuation, points out that, in the long pipeline system, the subarea calculation of head loss along with flow rather influences the calculative results of water hammer pressure, advices to take the subarea calculation of head loss along with flow into account in the water hammer calculation of the long pipeline system
對應于正確的水擊數學模型（ 3 ）的特徵差分方程形式如下c ，弓+吼川一c ，唱一幾弓扮幾rv另卜川= o幾代+吼川一幾唱一吼嶸{一c :腳丸}唱} ? 「本論文在最後的計算部分，通過對新老數學模型的數值計算比較，進一步論證了當前水擊數學模型的不正確性。並且應用改善了的特徵線法對正確的數學模型（ 3 ）進行了計算分析，研究了各種因素對水擊壓強值和水擊現象衰減的影響，指出在長管道系統中，沿程水頭損失的分區計算對水擊壓強的計算結果影響較大，建議在長管道系統的水擊計算中應按分區進行沿程水頭損失的計算。Lt is obvious that the decaying rule of average reverberation intensity is affected by scattering coefficient of sea floor, sound speed profile, inclination of bottom etc. the sea floor scattering function is the most importan factor to the intensity decaying rule
結果表明：海底散射方向性指數因子、海水聲速梯度、海底傾斜角等對海洋混響平均強度的衰減皆有影響。海底散射方向性指數因子對其影響最大，即適當選取海底散射模型是淺海近程混響建模的首要因素。It including the choice of factors and decision of weight value, the calculation of factors of land grading, the choice of calculation models and declining models
具體介紹了各種定級因素的選擇及權重的確定，因素作用分的計算，定級因素因子計算模型和衰減模型的選擇。Firstly, each single factor ( concrete carbonation, steel bar corrosion materials strength ) related the resisting forces of rc bridges is considered in this paper. then a resisting force model for multiple factors is created based on two types of steel bar corrosion : general and localized corrosion models
本文首先考慮混凝土碳化、鋼筋銹蝕、材料強度等單因素對橋梁結構抗力衰減的影響，然後在此基礎上建立多因素綜合作用下的結構抗力衰減模型。Primarily there are two aspects : 1 ) the calculation model of the value of land classifying units - - model of time distance attenuation. in the calculation model of the value of land classifying units, author brings forward the model of time distance attenuation. in this model adopting the network analysis, and by establishing the road network, and proceeding path analysis, computing the time distance, then proceed the exponential attenuation or straight line attenuation on time distance, get the value of influence factor of the land classification unit
主要有兩個方面： 1 、定級單元分值計算模型? ?時間距離衰減模型在定級單元分值的求取模塊中，提出了時間距離衰減模型，模型中採用網路分析的方法，通過建立道路網路，進行路徑分析，求取時間距離，進而按時間距離進行指數衰減或直線衰減，得到定級單元因素因子影響分值。分享友人