梯度計 的英文怎麼說
中文拼音 [tīdùjì]
梯度計
英文
gradiometer-
On the basis of foreign documents, the dissertation firstly describes the morphology, taxonomy, and biological characters of cochineal insects. then, by using artificial climate cases in the lab, according to orthogonal design, 8 lands of combinations of temperature, humidity and light is set, while the temperature has four levels : 15, 20, 25 and 30, and the relative humidity has two levels : 60 % and 80 %, while the light also has two levels : 980 lux and 60 lux. through observations and analysis of hatching percentage, survival percentage of the first instar and during from the second instar to the adult, the population tendency index, generation life cycle, size and eggs of female adult, the development of the cochineal under different conditions is studied
在收集、整理國外對胭脂蟲的研究資料基礎上，首先從胭脂蟲的形態學、分類學、生物學特性入手，進而在實驗室內利用人工氣候箱，應用正交設計方法，設計了4種溫度、 2種濕度、 2種光照梯度的不同組合，通過測定胭脂蟲的孵化率、 1齡若蟲的存活率、 2齡若蟲至成蟲期存活率、種群趨勢指數、世代歷期、雌成蟲的大小、懷卵量等生物學指標，深入研究胭脂蟲在這些組合下的生長發育狀況，應用數理統計方法，分析出溫度、濕度和光照對各項生物學指標的影響，找出胭脂蟲適宜的室內培育條件，並為野外胭脂蟲的培育提供一定的理論依據。Finite element method was used for the calculation of temperature field, temperature gradient and thermal stress of the coal water slurry ( cws ) ceramic nozzle
摘要採用有限元法對陶瓷水煤漿噴嘴溫度場、溫度梯度及其熱應力進行了分析計算。After processing, the sensitometrically exposed step wedge is read on a densitometer and the data is plotted.
加工完畢后，即用密度計對試驗膠上復制的階梯級譜的密度進行測定，然後用測得的數據作圖。Methods 1 ) statistic methods including factorial experiment was carried out to optimize the major conditions for sample management, and the feasible negative and positive control for fcm analysis of cd62p expression were check out
方法1採用濃度梯度法優化gprp濃度條件，採用析因設計優化凝血酶濃度和37孵育時間條件，尋找最佳陰、陽性對照。Also the theoretical basis of the method have been checked through simple deducing simulation and the influences of various physical parameters on the method have been studied. it is shown that the method is theoretically reliable for the production oil wells without very high production rate and is more suitable in field production for oil wells ( i ) in area with bigger geothermal gradient ; ( ii ) producing fluids ( oil and water ) with distinguish thermal characteristics ; ( iii ) producing oil with lower heat capacity or water with higher heat capacity ; ( iv ) with good surface measurement accuracy, as well as the method h as certain requirements on the accuracy of the temperature and flowmeter logs sensors
就該產出剖面方法的理論基礎進行了簡單的正演模擬和可能影響該方法的各項物理參數進行了全面的考察，結果表明，該方法對于非高產的生產油井來說在理論上是可靠的，在實際生產中適合於（ 1 ） 、油井所在地區地溫梯度較大的油井； （ 2 ） 、油水熱特性差別較大的油井； （ 3 ） 、油比熱容值偏低水比熱容值偏高的油井； （ 4 ） 、井口計量精度較高的油井，並且對井溫測井和流量測井的傳感性精度有一定的要求。Among them the gray level co - occurrence matrix ( glcm ) and gray gradient co - occurrence matrix ( ggcm ) methods, which attributed to the statistic textural analysis scheme were then chosen to extract the textural features of five kind areas on satellite images. in the second part the principle of classification and bp neural network were introduced. combined with textural features, the improved bp neural network successfully performed on the classification of the satellite images
論文的第一部分介紹了進行紋理特徵研究的一些典型的方法，利用其中的基於統計的紋理分析法中的灰度共生矩陣以及灰度一梯度共生矩陣法，分析了衛星雲圖上五類區域的紋理特性；第二部分主要介紹了遙感圖像分類原理以及神經網路中的bp演算法，在對演算法原理進行深入理解的基礎上，把紋理特徵與神經網路進行組合，實現對衛星雲圖進行分類分析；第三部分內容是在前面圖像分類結果的基礎上，對序列圖像用相關匹配法進行運動分析，反演雲跡風風場。Moving coil gradiometer
動圈重力梯度計According to the correlative theory of hydromechanics and shock wave, theoretical model of creating quasi - isentropic compression via w - mo - ti - mg system flier - plate with graded wave impedance was established, and study on the numerical simulation of the impact process was then carried out
根據流體力學和沖擊波理論知識，首先建立了梯度飛片擊靶的理論模型，對w - mo - ti - mg系梯度飛片擊靶過程進行了數值模擬計算。Increscent weight of oxidation, graphic and micrographic were explored, meanwhile, the mechanism of anti - erosion and wear - resistant of new coating material are also studied. at last, a program applied to calculate the temperature distribution and heat transmission between water wall tubes with sprayed coatings and metal anti - erosion tile was developed by use of visual basic
文中最後採用vb6語言計算機編程，計算了不同材料塗層對鍋爐水冷壁管的傳熱效果及徑向溫度梯度的影響，同時與加裝了防護瓦和未加任何防護的水冷壁管進行了比較。Functionally graded materials ( fgm ) is that the components and the structure of the material are gradient distribution from one side of the material ( product ) to the omer. so far, fgm has been widely used in modern industries
梯度功能材料，是指在材料設計製造過程中，使構成材料的要素沿著厚度方向由一側到另一側呈梯度連續變化，並使材料的性能與功能呈現連續變化的一種新型材料。Determination and regression of overburden pressure gradient
上覆巖層壓力梯度合理計算及擬合方法Chapter 5. based on the measured refractive index distribution curve, according as the theoretical model of light transmission in the grin medium, using quadrivalent runger - kutta method to carry out the light tracking, by this means the mainly imaging character index of the micro - lens such as foci, longitudinal and transverse spherical aberrations aberration etc is calculated. i
第五章從測量所得折射率分佈曲線出發，根據梯度介質球內光線傳輸的理論模型，用四階runger - kutta方法進行光線追跡，計算了此種梯度球的縱橫向球差等光學特性，給出所製作梯度折射率微球透鏡成像性能的評價。Abstract : a cad tool based on a group of efficient algorithms to verify, design, and optimize power / ground networks for standard cell model is presented. nonlinear programming techniques, branch and bound algorithms and incomplete cholesky decomposition conjugate gradient method ( iccg ) are the three main parts of our work. users can choose nonlinear programming method or branch and bound algorithm to satisfy their different requirements of precision and speed. the experimental results prove that the algorithms can run very fast with lower wiring resources consumption. as a result, the cad tool based on these algorithms is able to cope with large - scale circuits
文摘:介紹了一個基於標準單元布圖模式的電源線/地線網路的輔助設計集成工具.它應用了一系列高效的演算法，為用戶提供了電源線/地線網路的設計、優化和驗證的功能.非線性優化技術、分枝定界演算法和不完全喬萊斯基分解的預優共軛梯度法是該工作的三個主體部分.用戶可以選擇使用非線性規劃的方法或者幾種分枝定界方法來滿足他們對于精度和速度方面的不同需求.實驗結果表明，文中所提供的演算法可以在很快的運行速度下實現更低的布線資源佔用.因此，在這些有效演算法基礎上實現的輔助設計工具具有處理大規模電路的能力Influence of earth temperature gradient on ground stress calculation in underground mines
地溫梯度對地下礦山地應力計算的影響It includes two aspects in content : one is the best choice for plane disposal of pipeline, and its methods follows as decision - making plot, simple trapeziform and optimizing trunkform etc ; the other one is optimizing pipe parameter when the plane disposal of pipeline has been fixed, and the methods of which are linear programming, unlinear programming, dynamic optimizing, direct optimizing, hereditary arithmetic and so on
污水管網優化設計包括兩個方面的內容：一是管線平面布置的優化選擇；其方法有：決策圖法，簡約梯度法，優化樹法等。二是在管線平面布置已定情況下進行管道參數的優化；其方法有：線性規劃法，非線性規劃法，動態優化法，遺傳演算法，直接優化法等。Recently, a great progress has been made in aerodynamic optimization design technologies based on computational fluid dynamics. the control theory approach advocated by antony jameson is the typical methodology among them. its major advantage is that the computation of the sensitivity derivatives of cost function with respect to design variables is nearly independent of the number of design variables, which greatly saves the computational cost
近年來，計算流體力學（ cfd ）設計技術得到較大發展，其中最有代表性方法是jameson發展的基於控制理論（伴隨方法）的氣動優化設計技術，其顯著優點是目標函數對設計變量的梯度計算幾乎與設計變量數目無關，從而大量節省了計算費用，並成為當前cfd領域的研究熱點。Compared with traditional optimization methods, genetic algorithm has two notable characters. one is the latent parallelism and the other is searching in the whole area. genetic algorithm has some advantages which traditional methods do n ' t have
與常規的優化演算法相比，遺傳演算法具有隱含并行性和全局收斂性兩大顯著特徵，並且具有常規優化方法所沒有的優點，如不需要梯度計算等。Magnetic anomaly detection is a kind of magnetic technology of target - detection. it is developed with the progress of magnetic sensors, which is based on the phenomena that ferrous objects disturbs the magnetic lines of force of the earth. so we can gain the neccesary informatin of the target through processing the data of the magnetic anomaly signatures. this technology has a wide perspective in the future. this paper will study the technoly of mad through a lot of experiment. the platform for the experiment is made
本論文通過大量實驗對磁異信號目標探測技術進行了研究，研製了磁異信號目標探測技術試驗平臺，利用amr磁阻傳感器開發了提取磁異信號特徵量?磁梯度計，並基於磁場梯度計通過實驗對模擬磁性目標的磁異常場的分佈進行了研究，用圖示法將其分佈特徵表現出來，發現了磁異信號測量的最佳角度，並給出了理論分析和結論。The material job and main conclusion are as follows : ( 1 ) a simple boundary orthogonalization procedure independence grids generation method is put forward on the base of algebraic grid generation method ; data structure and computational model on interface are established aiming at blocks of structured grids. ( 2 ) simple procedure is established in nonorthogonal grids by use of the finite volume method and in - depth discusses on special topic such as boundary condition in nonorthogonal grids, deferred correction method and grads compute on calculational nodes, and so on
本文完成的具體工作和主要結論如下： 1 ）以代數網格生成方法為基礎提出了一種簡單的、可獨立於網格生成方法之外的邊界正交化技術；針對分區結構網格系統建立了分區交界面處的數據結構與計算模型； 2 ）利用有限體積方法在非正交同位網格系統中建立了simple求解演算法，對非正交網格系統中的邊界條件、延遲修正技術及計算節點的梯度計算等專題進行了深入討論。A new model for calculating ultimate injection - production well spacing in low permeability reservoirs with starting pressure gradient and its application
利用啟動壓力梯度計算低滲油藏極限注采井距的新模型及應用分享友人