variation works 中文意思是什麼
variation works
解釋
修訂工程-
Tree ring is a kind of natural archives, on which the isotopic analysis is important to study global climate and environmental change. the authors mainly provide a comprehensive introduction to the fractionation models of carbon, hydrogen and oxygen isotope in plants, their research techniques and the extract methods from cellulose. that results show isotopic tracer can record the message of climatic variation and has become a powerful tool for paleoclimate reconstruction and for the modern environment changing research. especially studying on pages, the cellulose isotopic analyses of imbedded old tree ring have become the mainly quantitative means of environmental evolvement. in addition, china is a typical monsoon country, research in tree ring stable isotope seasonal variation can give us a lot of important information on that. up to now, the research techniques and works on tree ring in our country are still in its earlier stage, and remain many limitations. it needs further accumulate basic research materials, intensify regional contrast and intercross studies on relative subjects
尤其是在過去全球變化pages研究中，埋藏古木纖維素中的碳氫氧同位素分析已成為環境演化研究的主要量化手段。另外，對于中國這樣典型的季風氣候國家，開展樹輪穩定同位素隨季節性變化的研究具有重要的意義。我國在樹輪研究方面起步較晚，研究方法和研究內容上也比較簡單，還存在不小差距，既要進一步積累基礎資料，又要做區域對比，加強與相關學科的交叉研究。 -
The main works and contributions achieved in this dissertation are concluded as follows : 1. based on the scalar diffraction theory, the mathematical model of optical configuration of transmissive grating interferometer is established. it indicats that moir interference fringes is affected by many parameters, such as grating pitch, light wavelength, light beam size and incidence angle, etc. the variation that the width, intensity, orientation and contrast of moir interference fringes along with every parameter is numerically analyzed
主要的研究內容和所取得的成果可歸納如下: 1 .基於標量衍射理論，建立了透射式光柵干涉儀光路的數學模型，分析了透射式光柵干涉儀的莫爾干涉條紋與光柵柵距、光柵開口比、光波波長、光斑尺寸、光束入射角等多個參數的關系。 -
Works on the bending roll system of four - roll rolling mill, the workroll shape variation caused by the force of bending roll and the contact stress between rolls was researched with the fem software ansys, the maximum deformation of the work roll was calculated, and the curve of the gap adopting the least - squares method was fitted, which set the base of the further calculation of load - gap shape
摘要以四輥軋機的彎輥系統為研究對象，利用有限元分析軟體ansys研究彎輥力和輥間接觸應力引起工作輥形狀的變化，計算工作輥彎曲的最大變形量，並用最小二乘法對輥縫曲線進行擬合，為進一步計算有載輥縫形狀提供可靠的理論依據。 -
But the variation of its aerodynamic forces will induce flapping motion and produce the cyclic pitch on the main rotor blades by the bell mixing mechanism. in order to study the effect of bell - hiller stabilizer bar on helicopter stability and control, this paper first analyze the function and the principles, give the flapping equation and a flight dynamic model with bell - hiller stabilizer bar. and then works over the stability and control of uav r - 50 in hover and cruise condition, and analyzed the influence from parameters of the bar to it
為了深入研究希勒伺服旋翼對直升機穩定性和操縱性的影響，本文首先分析了希勒伺服旋翼的功能和工作原理，推導了伺服旋翼的揮舞運動方程，建立了帶有希勒伺服旋翼直升機的飛行動力學模型，然後以yamahar - 50無人直升機為例，分析該直升機在懸停和前飛時的平衡、穩定性和操縱性，在此基礎上進一步研究希勒伺服旋翼設計參數變化對直升機穩定性和操縱性的影響。 -
Wwf hong kong believes that with the scale of work associated with the bridge, and the relative lack of relevant publicly - accessible information about the environment in the works area, it is essential to gather basic information to cover the natural variation over a full annual cycle
世界自然基金會認為，由於大橋工程規模大，加上公眾對工程范圍的環境狀況所知有限，因此必須搜集自然環境在一年內的變化的基礎資料，即考慮由準備階段起至調查完成後記錄所得結果的整個階段。 -
The paper analyzes and summarizes the following laws of distinctive sediment yield produced in storm floods of the region based on predecessors ' study : storm is the main dynamic force of erosive sediment yield and storm, flood and sediment exist an inevitable relation ; the flood occurring time is concentrated with high peaks and huge volume, suddenly rising and suddenly falling and has decisive influence to the formation of a major flood peak in the middle yellow river ; the main reasons of concentrated coarse sediment of the river is severe erosive sediment yield, strong sediment transporting capacity and high sediment concentration ; the important influence of frequent or continued storm floods happened in he - long reach especially in coarse sediment concentrated region to the sediment transport of the yellow river and ; along with the increase of harnessing, regional flood trend is becoming smaller but the variation of sediment quantity is not obvious and the reaction of peak discharge and flood runoff of majority tributaries are not sensitive, showing that a general and normal engineering works can not effectively control regional major floods especially the sediment of an extraordinary flood
摘要在前人研究的基礎上分析總結了該區特有的暴雨洪水產沙規律：暴雨是侵蝕產沙的主要動力，暴雨、洪水、泥沙之間存在著必然的關系；洪水發生時間集中，峰高量大，暴漲暴落，對黃河中游大洪峰的形成具有決定性影響；侵蝕產沙強烈而粗泥沙集中，輸沙能力強，洪水含沙量高，是黃河粗泥沙的集中來源地；河龍區間特別是粗泥沙集中來源區頻繁或連續的暴雨洪水對黃河輸沙有重要影響；隨著治理水平的提高，區域洪水有減小趨勢，但泥沙量變化不明顯，大部分支流的洪峰流量、洪水含水量反應不敏感，說明一般規模和水平的治理工程還不能有效控制區域大洪水特別是特大洪水的泥沙。 -
The dissertation focus on the main conflict of flow and sediment change, by analyzing the flow and sediment features, and change in rivercourse of typical period in histry, collecting the data of riverbed change. according to the flow and sediment change condition, combining the existed water works, and based on the results of former researches, the study are conducted on the law of flow state change by comparing rivercourse conditions before and after the completion of sanmenxia project, which may provide some idea for flow state change when xiaolangdi project completed and put into operation and some basic clue for the prediction of variation trend of river section from tiexie to shendi, from shendi to tieqiao near zhengzhou, from tieqiao near zhengzhou to dongbatou, from dongbatou to gaocun and so on in the year 2010 and the period 2010 to 2020. the result may provide some reference for flood control of these wangdering river sections, and some guidelines for planning of water projects and arrangement of project sequence
本課題緊緊抓住小浪底水庫運用后水沙變化這一主要矛盾，通過分析研究以往典型時期的水沙特點和河道演變特點，收集分析河床邊界條件變化資料，小浪底水庫運用后水沙資料變化，結合現有河道整治工程建設情況，總結前人的研究成果，重點研究三門峽水庫運用後下遊河道河勢變化的規律和特點，探索小浪底水庫運用後下遊河勢變化情況，分析預測游蕩性河道鐵謝至神堤、神堤至鄭州鐵橋、鄭州鐵橋至東壩頭、東壩頭至高村等各個河段在2010年， 2010年至2020年期間的河勢變化趨勢，為分析游蕩性河段的防洪形勢，指導河道整治工程建設的規劃和工程安排提供決策參考和依據。 -
The result of the calculation for tip clearance is reasonable when it is compared with theory. two ways are put forward for convention of dimension of the turbine components from high temperature to low one, which is related with tip clearance, a simple example is used to illuminate that the two ways are useful, using the method of design optimization, axiisk and a blade of a certain turhine is analysed, it showes that the method of design optimization is feasible to be used for convertion of dimension of the turbine components. finally, ansys software is used to analyzed the variation of tip clearance with the method of cyclic symmetry analysis when engine works under the conditions of temperature and rotational speed, am using a new method to deal with thermal contact resistance in the calculation
本文完善了計算渦輪葉尖間隙的簡化演算法程序，增加了程序的計算功能，並將其應用於某高壓渦輪進行葉尖間隙分析，所得結果與理論結果進行了對比，得出修改後的程序用於葉尖間隙計算是合理的；同時提出了與葉尖間隙相關的渦輪典型部件的冷、熱態的尺寸兩種換算方法，使用優化設計的方法進行了實例分析，說明了所提出的計算方法是可行的；最後應用ansys有限元軟體利用循環對稱的方法分析了某型發動機高壓渦輪在溫度場及離心力作用下的葉尖間隙在發動機工作過程中變化情況，並分析了計算中的接觸熱阻的處理問題。 -
This modulator works with the guided - wave reflectance peak, in which the light intensity is changed by the variation of the refractive index of poled polymer due to the electro - optic effects. device performances have been theoretically and experimentally investigated. we also successfully carried out experiments of video signal transmission using the proposed modulator
該調制器工作于金屬包覆波導的衰減全反射導模吸收峰，利用極化聚合物電光材料的折射率對導模吸收的影響來實現電光調制，並對器件的性能指標進行了實驗研究，同時利用製作的反射型電光調制器進行了視頻信號良好地傳輸實驗。 -
An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements. the mass - flow - rate of propellant was selected as a state variant, which was estimated by employing an integral state model and ekf filter. the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations. the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit. the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process
飛行器軌道機動過程中，為跟蹤、定位機動目標和干預機動控制過程，需要統計處理離散的雷達觀測量實時估計推進發動機的推力，進而確定飛行器的瞬時軌道參數.本文所述演算法是該工程問題的探討和解決方案.文章建立了軌道機動過程中連續變質量運動模型和離散雷達量測模型，推進發動機的質量秒耗量作為表徵推力加速度的一個近似常量，應用擴展卡爾曼濾波對離散的雷達測量數據進行順序統計處理給出秒耗量的最小方差估計;文章詳細地推導了線性化量測模型的變分方程和觀測矩陣;模擬結果表明該演算法能快速、準確地估計推進發動機的質量秒耗量和向機動目標施加的實際推力 -
Based on the former research, several works in this paper is listed as follow, which is studied by experiment research, theoretical analysis and numerical calculate : firstly, based on local observation and laboratory experiment result, consolidation mechanism of vacuum - surcharge preloading is analyzed form typical mechanics and microstructure seepage factor. a great deal of observed dada is employed to analyze the deformation characteristics of soil after being treated and variation law of pore water pressure
本文在前人工作的基礎上，通過試驗研究、理論分析、數值計算等手段主要進行了以下幾方面地工作： （ ）分析了大量現場觀測成果及室內外試驗資料，從經典力學和微觀滲流兩個角度解釋了塑料板排水真空-堆載聯合預壓法加固軟基機理，總結了該法加固的土體變形特點、孔隙水壓力變化規律。 -
4 " tests on completion " means the tests which are specified in the contract or agreed by both parties or instructed as a variation, and which are carried. out under clause 9 [ tests on completion ] before the works or a section ( as the case may be ) are taken over by the employer
4 「竣工檢驗」指在僱主接收工程或某區段（視情況而定）前按照第9款竣工檢驗進行的檢驗，此檢驗可在合同中說明、或由雙方協商決定、或以變更的形式被指示進行。 -
On the basis of this, the effective reflective index with the variation of the carrier density is discussed. this paper also analyzed the random facet phase and the length of the cavity ' s influence on threshold characteristic. especially, the wavelength tuning characteristics have been investigated in detail when one segment works as absorbed region
在此基礎上，研究了每一段等效反射率譜曲線隨載流子濃度變化的情況；分析了邊界相位的不確定性以及激光器腔長對閾值特性的影響；重點討論了其中一段工作在吸收狀態下的波長調諧性質。 -
The main works are listed as follows : ( 1 ) based on the excitation of bi - directional current pulse technique, a new measuring circuit for weak variation of resistance was proposed for electrical resistance tomography. traditional ac current source is n ' t adopted as the exciting source. through fast bi - directional current switching, the polarization effects are eliminated
該電路主要優點如下：該電路沒有採用傳統的交流電流激勵法作為系統的設計原理，而是通過快速的正負極性電流切換來削弱直流電流激勵時激勵電極的極化效應，使通過直流法來測量氣液兩相流的電阻微弱變化成為可能。 -
Final round : freely chosen pieces different from the 1st round within 30 minutes, including one d. scarlatti s sonata and one multi - movement piece sonata, variation or suite, etc other pieces can be 20th century contemporary works or nationalistic works
決賽：自選30分鐘以內不同於初賽的樂曲，其中應有一首斯卡拉蒂奏鳴曲，還應有一首多樂章作品（如奏鳴曲、變奏曲、組曲等） 。 -
29 " subcontract works " means all the work and design to be performed by the subcontractor including temporary work and any variation
"分包工程"指由分包商實施的所有工程和設計，包括臨時工程和任何變更。 -
3 " drawings " means the contractor ' s design intent of the subcontract works as listed in the appendix, and any variation to the contractor ' s design intent
"圖紙"指列在附錄中的總包商的設計意圖，以及對總包商設計意圖的任何變更。
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