高度的變動 的英文怎麼說
中文拼音 [gāodùdebiàndòng]
高度的變動
英文
variation in altitude-
Second, we discuss the influence of environmental referance potential temperture and thermal wind on mesoscale symmetric instability. we find the expression of disturbance stream function and criterion of symmetric instability by analytical method and conclude that change caused by environmental referance potential temperture with height and thermal wind make critical richardson number and disturbance critical half - wave length of symmetric instability larger, that is to say, they benefit the occurance of symmetric instability. third, we study nonlinear perturbation analysis of mesoscale vertical circulation and evolution equation by means of f - plane. non - hydrostatic balance and filiter model
第二,討論了環境位溫與熱成風因子對中尺度對稱不穩定的影響。運用解析的方法求出了擾動流函數的表達式和對稱不穩定的判據,發現環境參考位溫隨高度的變化與熱成風因子使得對稱不穩定臨界理查遜數及擾動的臨界半波長都變大,這有利於對稱不穩定的發生。第三,採用f平面、非靜力平衡、濾聲波模式,討論了中尺度垂直環流非線性攝動分析及演變方程。The dynamic performance of a ram air system will vary with mach number and altitude and this tends to follow the aerodynamic characteristics of the missile.
像導彈空氣動力特性一樣,沖壓空氣式系統的動態特性隨馬赫數和高度的變化而變化。Objective : to investigate the effect of pumpless portosystemic bypass in clinical piggyback liver transplantation. methods : after catheterized inferior mesenteric vein, the silastic catheter ( filled with heparin saline ) was connected with the catheterized tube of internal jugular vein or subclavian vein in four piggyback liver transplantation patients. the channel was opened after the portal vein was occluded. the portal vein blood poured into the superior vena cava through the pumpless channel. the changes of mesenteric congestion, portal vein pressure, blood pressure and pulse were observed. results : during the occlusion of portal vein, the portal vein pressure was increased greatly, the intestine was congested and swelled obviously and the blood pressure and pulse fluctuated gently. after the pumpless bypass opened, intestinal congestion and swell were abated markedly, the portal pressure, blood pressure and pulse gradually returned to normal range. conclusions : pumpless portosystemic bypass shows a great effect on clinical piggyback liver transplantation. it is a feasible and economical method
目的探討背駝式原位肝移植術中採用體外門-體靜脈無泵轉流的臨床效果.方法4例行背駝式原位肝移植患者,腸系膜下靜脈屬支插管經體外硅膠管(充滿肝素鹽水)與頸內靜脈或鎖骨下靜脈插管相接,在阻斷門靜脈后開通腸系膜下靜脈插管,門靜脈血從體外無泵轉流管流入上腔靜脈,觀察轉流前後腸道瘀血、門靜脈壓、血壓、脈搏等變化情況.結果門靜脈阻斷后腸道明顯瘀血、腫脹,門靜脈壓力明顯升高,血壓、脈搏有不同程度的波動,無泵門靜脈轉流開放后,腸道瘀血、腫脹明顯好轉,門靜脈壓力逐漸恢復正常水平,血壓、脈搏恢復正常.結論背駝式原位肝移植術中體外門-體靜脈無泵流具有方便、經濟、實用等優點,具有良好的臨床效果This is a flight during which the aeromodel is aerodynamically manoeuvred by control surface ( s ) in attitude, direction and altitude by the pilot on the ground using radio control
本類系指由地面的運動員通過無線電遙控模型改變飛行姿態、方向和高度的項目。By the analysis and study, it is showed that : 1 ) the lower weihe river main channel was at a balanceable state between aggradation and degradation and floodplain of the lower weihe river is a tiny aggradation state before the construction of the sanmenxia dam ; 2 ) the severe aggradation of the lower weihe river bed is mainly caused by the increasing riverbed elevation at tongguan after the construction of the sanmenxia dam ; 3 ) the main reason leading to the increasing riverbed elevation at tongguan is the unreasonable operation of the sanmenxia reservoir ; 4 ) the rate of the riverbed aggradation at tongguan reach and the lower weihe river reach are speeded by adverse condition of incoming water and sediment recently
然後以實測資料為基礎分析研究了三門峽建庫前後潼關高程的變化規律以及渭河下遊河道的沖淤演變規律,分析研究表明:建庫前渭河下游主槽處于動態沖淤平衡狀態,灘地處于微淤狀態;建庫后,渭河下遊河道發生嚴重淤積主要是由於潼關高程的抬升造成的;潼關高程的抬升主要是由於三門峽水庫的不合理運用造成的,近期不利的水沙條件加劇了潼關河床的抬升速度和渭河下游的淤積。The development of real estate industry get a highly connecting with the development of economy, so entering wto, china would be more and more affected by the global economy situation and the regional change
房地產業的發展與經濟發展呈高度的正比例關系,因而,加入wto之後,我國的房地產業受國際經濟全局和區域變動的影響也會越來越明顯。We can discovered the factors which affected the monetary velocity of our country long - term drop include the economical monetization degree, the change of, interest rate, high savings ratio
研究結果表明影響中國貨幣流通速度長期下降的因素有經濟貨幣化程度的加深、利率的變動、居民的高儲蓄率。Using ncep / ncar daily reanalysis data and scsmex data, an investigation is carried out of the relationship between the position variation of the west pacific subtropical high ( wpsh ) and the apparent heating in june 1998 based on the complete vertical vorticity equation
摘要採用ncep / ncar再分析逐日資料和scsmex等資料,根據全型垂直渦度傾向方程,研究了1998年6月西太平洋副高位置變動與大氣熱源的關系。Finally a set of equations with initiate values for boundary value problem is established where the velocity potential and its normal derivative are unknowns. because the model includes the effects of both the time and space to the velocity potential of free surface, it can be applied to strong nonlinear wave. as examples, solitary wave is computed in the numerical flume
推導給出計算域內以所有節點波勢函數和波面位置高度的時間增量為未知量的線性方程組,並同時考慮時間因素和空間變位對波面勢函數的影響,在預設的計算精度下,通過時步內的循環迭代逐一確定每個時步上的波面運動位置,從而建立了一種可適于求解強非線性波浪變形計算的數值模式。The wavelet method used in economic forecast depends on its " mathematics microscope " property. it does the layer analysis and forecast to indicators. it can improve forecast precision, what ' s more it can search and express the structural feature of data such as development cycle, second cycle, especially to some sudden change data which will provide effective and reliable warranty to the complexity and violent fluctuant data indicators in enterprise
基於小波進行經濟預測的方法依靠其「數學顯微鏡」的特性,對待分析的預測指標進行逐層分析和預測,在提高預測精度的基礎上,能對分析數據對象的結構特徵進行挖掘,分析數據特徵如發展主周期、次周期等,尤其對具有突變性質的數據具有很好的表徵分析能力,這對于企業中復雜的變動劇烈的數據指標的預測能提供有效可靠的保證。Facing to the reduction of the water diversion from the yellow river for hetao irrigation district inner mongolia autonomy, and giving attentin to agriculture production and improvement of salinization, this paper researches optimization model of district water - saving irrigation water management. the paper also quests for the optimization model of crop irrigation system and the optimization irrigation strategy aiming at the short of water for agriculture. in order to save water and use water high efficiently, this paper researches the change regulation of irrigation system of spring - wheat that is the important crop in the irrigation districted establishes the multidimensional dynamic model of irrigation rules of spring - wheat. lt also makes the simulation model of salt leaching of fall irrigation rules during non - growing period, and sorts the elements influencing water - saving of irrigation system
在內蒙古河套灌區的引黃水量減少又要兼顧灌區的農業生產和土壤鹽漬化向良性發展的形勢之下,本文針對灌區內區域灌溉水管理的現狀,對灌區內區域節水灌溉水管理優化模型進行了研究。研究針對農業水資源短缺的現狀,在節水灌溉條件下,對作物的灌溉制度進行優化模型探索,尋求最優灌溉策略。全文圍繞節水與高效用水,綜合應用了系統分析、灌溉排水及節水灌溉的原理和知識,研究了灌域內主要作物春小麥的灌溉制度的變化規律,建立了春小麥灌水制度的多維動態優化模型;建立了非生育期的秋澆制度的鹽分淋洗模擬模型;對節水灌溉水管理的影響因素的重要性進行了排序研究。Abstract : in the internal circulating fluidized bed, there exist the moving zone, fluidizing zone and heat transferring zone with different fluidized air velocities. the convection heat transfer coefficient of immersed tube in the heat transferring zone is impacted by the velocity of the moving zone nearby and its data and change trend are obviously different with those of the common bubbling bed. the maximum heat transfer coefficient is evidently higher than that of the bubbling bed. as the bed materials have not been fluidized in the heat transfer zone, the coefficient has increased highly. the curve of that changes gently, feasilble to control the combustion intensity in the fluidizing zone
文摘:垃圾焚燒系統中,內旋流流化床存在不同布風速度的移動區、流動區和換熱區,處于換熱區的埋管的對流換熱系數受附近流動區氣流參數的影響,其變化趨勢及數值大小與普通鼓泡型流化床之間有明顯不同:最大的對流換熱系數明顯高於鼓泡床;換熱區尚未流化時,對流換熱系數已經大幅提高;整條換熱曲線的變化比較平緩,易於流化床濃相床內換熱。Second, the author introduced a new stability region, and programmed a trajectory of variable zmp, which was defined as a cosine curve ; the author also designed a cog - compensated method to keep the cog ’ s height ; based on dynamics of 3 - d inverted pendulum, the author educed the cog ’ s trajectory equation of the robot in the three - leg - support phase, and used third - order splint function to ensure the acceleration continuity of the robot ’ s cog in the four - leg - support phase. at last, walking patterns of the corresponding gait are generated through programmer design
然後,提出了一種新的支撐區域選取方法,採用了按餘弦規律變化的zmp運動軌跡;為了維持機器人行走時重心高度不變,採用了一套有效的質心高度保持方法;基於三維倒立擺模型,推導了機器人三腳支撐期質心運動軌跡方程;採用三次樣條曲線插值規劃了四足支撐期加速度連續的質心運動軌跡。This chapter discusses the concept, measurement and the way of enhancing agricultural performance of technological change. chapter 7 inquires into agricultural performance of scale. firstly, the author discusses the concept of economic scale, returns of scale and economic performance of scale ; then studies the measurement of economic performance of scale ; finally analyses the level of economic pe rformance of scale of farm households in binzhou
第七章農業經營規模與經濟效益規模經濟效益是指由於規模變動所引起的經濟效益的提高,或者說是由生產力諸因素集約度的變動所引起的投入產出率的提高,本章主要界定與農業規模效益相關的概念;根據規模報酬的三種情況,提出規模效益的計量方法;在定量分析濱州市農戶種植業規模效益的基礎上,研究分析農業適度規模經營的組織形式、推進機制及其在提高農業經濟效益中的作用。The analysis of this paper has produces following results : first, although monetary transmission theories have great difference from each other, these differences lie in the adjustment scope of the assets that they investigate ; second, the methods by which money affects economy are various, so it has a strong influence, however, the change in the amount of money will not only cause the change of the total demand, it will also lead to a change in total supply by corresponding expectancy, thus in a long term we ca n ' t rely on the expansion of money to expand the production ; third, third, with the deepening of the reform, the above monetary transmission mechanisms will play a more and more important role in china ' s economy, and the influence of currency to the economy will be more and more strong, but since the correlating micro - mechanisms is mot integral, we should be highly cautious when this change takes its place
本文的分析得出了以下的結論:第一,盡管各種貨幣傳導理論有很大的不同,但是這些不同可以歸結為它們所考察的資產調整范圍的不同;第二,貨幣作用於經濟的途徑是多種多樣的,因此它的影響力是非常之大的,但是貨幣量的變動不僅會引起總需求的變動,而且會通過預期引起總供給的變動,因而在長期內不可能依靠貨幣的擴張來擴張產量;第三,隨著改革的深入,上述貨幣傳導機制在中國經濟中的作用日益加強,貨幣對經濟的影響力也越來越大,因此從長期看,貨幣政策由信貸控制轉向貨幣量控制是一個必然的選擇,但是由於相應的微觀機制尚未健全,這一轉變應高度謹慎。The altitude ratio of a celestial body in its diurnal apparent motion
天體周日視運動過程中天體高度的變化率The problem of aging with declining birthrate, which resulted in the aging and lack of labor force, has been in japan since the 1970s and become more and more serious
日本的人口從20世紀70年代開始呈現少子高齡化的變動趨勢, 30多年來程度不斷加深,並且由此引起的勞動力不足和勞動力高齡化的問題越來越明顯。Based on optimal control theory and singularly perturbed theory, a singularly perturbed midcourse guidance law that guarantees air - to - ground missiles to ascent quickly is proposed. this new guidance law is a composite control law consisting of three parts : optimal climbing control using variable weighting factor method, minimum energy cruising phase control and minimum energy switching phase control. moreover, a new control logic is designed in order to remove influence of climbing control on switching phase. simulation results of a certain type of air - to - ground missile are presents. it is shown that, with simple control algorithm and feasible onboard implementation, this law not only guarantees air - to - ground missiles to ascent quickly, but also satisfies the requirements of midcourse phases. the studies have important theoretical meaning and great value of engineering application
為滿足實際作戰的要求,基於最優控制理論和奇異攝動方法,提出了一種可保證中遠程空地導彈快速爬升到最優高度的中制導律.它由變系數最優爬升控制,最小能量巡航控制和最小能量下滑控制組成.為了減小爬升段控制對下滑段的影響,提出了一種新的控制邏輯.最後針對某型空地導彈進行了模擬.結果表明,該中制導律較好地滿足了中遠程空地導彈在中制導段的要求.本文的研究結果具有較好地工程參考價值Abstract : based on optimal control theory and singularly perturbed theory, a singularly perturbed midcourse guidance law that guarantees air - to - ground missiles to ascent quickly is proposed. this new guidance law is a composite control law consisting of three parts : optimal climbing control using variable weighting factor method, minimum energy cruising phase control and minimum energy switching phase control. moreover, a new control logic is designed in order to remove influence of climbing control on switching phase. simulation results of a certain type of air - to - ground missile are presents. it is shown that, with simple control algorithm and feasible onboard implementation, this law not only guarantees air - to - ground missiles to ascent quickly, but also satisfies the requirements of midcourse phases. the studies have important theoretical meaning and great value of engineering application
文摘:為滿足實際作戰的要求,基於最優控制理論和奇異攝動方法,提出了一種可保證中遠程空地導彈快速爬升到最優高度的中制導律.它由變系數最優爬升控制,最小能量巡航控制和最小能量下滑控制組成.為了減小爬升段控制對下滑段的影響,提出了一種新的控制邏輯.最後針對某型空地導彈進行了模擬.結果表明,該中制導律較好地滿足了中遠程空地導彈在中制導段的要求.本文的研究結果具有較好地工程參考價值The spindle is supported by high - accuracy rolling bearing ; the frequency governor imported from abroad is used in the main drive system to realize stepless speed regulation and constant linear cutting functions ; the bed is supersonic frequeney hardened, plastic coated guide ways are used for the carriage ; and stepping motor of acservo motor are used x and z axis to realize feed movement via the ball screws
主軸採用高精度的滾動軸承支承;主傳動採用進口變頻調速器,實現無級調速功能及恆線速切削功能;床身採用超音頻淬硬處理,採用貼塑導軌; x軸和z軸均採用步進或伺服電機,通過滾珠絲杠,實現進給運動。分享友人