運動的常數 的英文怎麼說
中文拼音 [yùndòngdechángshǔ]
運動的常數
英文
constant of the motion-
The geometrical conditions that the backstop can be run in gear have been educed by researching the movement of the components
研究了在逆止器工作過程中個相關零件的運動規律,並得出逆止器正常工作的幾何參數條件。Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator. fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio - parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping
本文的主要內容如下: 1 )對翅片管蒸發器結構特點進行分析,選取適當的微元控制體,就干、濕和霜工況下對每個微元分別進行傳熱傳質分析,基於經驗關系式確定霜的有關參數,對于霜工況下的霜生長建立模型,經適當假設,運用質量守恆、能量守恆和動量守恆方程建立適合動態模擬的蒸發器數學模型,為系統模擬奠定基礎; 2 )對蒸發在大擾動下的開、停機過程,運用動態集中參數模型進行分析和計算,為更好地描述製冷系統運行的全過程奠定基礎,同時也為製冷系統實現自動控制提供一定的理論基礎; 3 )對蒸發器正常運行過程,運用動態分佈參數和參數間定量耦合的觀點來分析和計算,為更好地了解穩態工況下各點參數的變化情況及各入口參數對蒸發器動態特性的影響即蒸發器性能對各參數變化的敏感性; 4 )編寫翅片管蒸發器動態特性模擬計算程序,可以計算不同邊界條件和初始條件下的製冷劑熱力參數、空氣溫濕度和霜厚度分佈場,實現對翅片管蒸發器在干、濕和霜工況下的動態模擬。Paragraph of time, the physical - training teacher educating a branch to organize implement new class bid to middle and primary school reforming condition making an investigation, indicate on inquiry in the front, scale is small since a little school running a school, a little rural area elementary school, does not move space especially, be not enough to pay attention to waiting a minute or to physical training, do not have very good according to that new class switches over to demand to open enough physical education, since entering the higher school the system restraint, a little school defies student sports activities and good health, physical education birthplace having some of higher class with the method of work " resorting to fraudulence ", go ahead culture class within outside row physical education, at present major middle and primary school stadium field layout, equipment and material facilities are obsolete, short - supplied, foundation has no way to ensure that regular sports of school is flexible carrying out, is difficult to say material request adapting to new class more
前段時間,教育部門組織體育教師對中小學實施新課標改革情況進行調查,調查表明,一些學校由於辦學規模小,特別是一些農村小學,沒有運動場地,或者對體育鍛煉不夠重視等等,沒有很好地按照新課改要求開足體育課,由於升學制度的制約,一些學校無視學生體育活動和身體健康,有些高年級的體育課貫用「偷梁換柱」的做法,外排體育課,內上文化課,目前多數中小學體育場地布局、器材設施陳舊、緊缺,根本無法保證學校正常的體育活動的開展,更難以說適應新課材的要求。This is unusual, since the vast majority of california ' s elementary students receive pe instruction from classroom teachers who are not pe specialists, says don morris, a professor of kinesiology and health promotion at california state university in pomona
波莫納的加利福尼亞州立大學運動學和健康促進教授唐?莫里斯說,這非同尋常,因為大多數加利福尼亞的小學生是由非體育專家的任課教師授課的。Motion controller composed of general chip series is developed and quadruple differential circuit utilizing dual monostable multivibrators with schmitt trigger inputs and dual 4 _ line to l _ line data selectors or multiplexers is put forward
本論文研製了一種用常規晶元系列組成的運動控制器,提出了採用單穩態多諧振蕩器和數據選擇器的四倍頻辨向電路。Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation
在近年來提出的基於質點運動學原理的單站無源定位理論基礎上,本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型,並對它們進行了分析和模擬;第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件;第四章針對傳統擴展卡爾曼( ekf )方法的缺點,提出了一種修正協方差的擴展卡爾曼濾波( mvefk )方法,並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較;第五章通過引入雷達機動目標跟蹤方法和模型,提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法;第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究,提出了幾種高精度測量脈沖序列多普勒頻率變化率的方法。Cervical myelopathy had been noted in patients with involuntary neck movement, especially in individuals with athetoid - dystonic cerebral palsy ( cp )
摘要頸部有不自主運動的患者,發生頸椎神經根或脊髓壓迫病變過去僅有少數報告,主要發生在舞蹈型-張力異常型的腦性麻痹者。When the axial speed varies harmonically about a constant mean one, the method of multiple scales is applied to the axially moving beam to determine the instability boundary due to parametric resonance
當軸向運動速度在其常平均值附近作簡諧波動時,應用多尺度法給出軸向變速運動梁參數共振時的不穩定條件。The linear permanent magnet synchronous motor ( lpmsm ) has avoided the effects of the mechanical transmission chains from rotary motions to linear ones, and has strong electromagnetism thrust, lower cost, small electrical time constant and rapid response etc., which becomes one of the best executive machines in the high - precision and micro - feed servo system
由於永磁直線同步電動機消除了旋轉電機由旋轉運動到直線運動的機械傳動鏈的影響,且具有電磁推力強度高、損耗低、電氣時間常數小、響應快等特點,使其在高精度、微進給伺服系統中成為執行機構的最佳選擇之一。The exhaust system and muffler are simplified as a set of 1 - d pipes with non - isentropic flow and with variable sections. the partial differential equations of non - stationary flow are transferred into the stationary differential equations by means of the characteristic lines. these equations are solved by finite difference method
在排氣管系的計算中將排氣管簡化為一組一維非等熵變截面管,並通過「特徵線法」將描述其運動的非定常流的偏微分方程轉化為常微分方程,再用差分數值方法依靠計算機求解。In general, the upward amplitude curve " curvature is larger, and it changes quicker. on the contrary, the downward is smaller and slower ; because the flare force contains the square of the wave elevation velocity, it results in an difference between the flare force frequence and the associated moving frequence ; the flare force decreases the downward amplitude of heaving oscillations ; the speed of ship has an ignorant effect on the peak values of three calculated values, but there is an obvious effect on the oscillating frequence ; the wave amplitude has an effect on the ship motion, and there is an linear relation between the oscillating amplitude and the wave amplitude on the whole. by the way, there are some experiences and lessons according to the progress calculation : before the calculation of the ship motion, we should checkout the balance in a calm water firstly, namely, the whole displace of ship and the longitudinal position of the center of gravity must be consistent with the draft in calm water, or else, the calculation may show the " floating " phenomenon ; the mixed language programming has a lot of virtues, but it exists a fatal limitation - the debug of dll
研究表明:在某些頻率范圍內相關水動力系數基本不隨吃水變化,只有超過某一頻率后水動力系數的值才會出現差異;在橫搖方向,水動力系數並沒有隨著吃水的變化發生規則變化,而是出現了波動現象;近船首剖面的水動力系數計算表明,水動力系數的波動非常大,並遠遠偏離了平均位置的水動力系數值,值的變化速率也不盡相同,總的看來,上振幅曲線曲率較大,變化較快,下振幅曲線曲率較小,變化較慢;外飄力和波面運動的速度的平方項有關,導致其振動頻率和相應運動方向的頻率不同;外飄力使升沉向下運動的幅值減小;船速對三個計算量的峰值影響甚微,但對振動頻率有明顯影響;波幅對船舶運動的影響是明顯的,船舶運動的幅值基本上和波幅成線性關系。Pickup cameras take in the video and get the data and translate to the computer. computer operates the avi video stream manipulation and the image processing
攝像頭拍攝被檢驗的儀表獲得視頻數據,計算機通過對avi文件視頻流的實時操作,對儀表進行實時的自動監控,實現監測儀表指針運動異常的功能。Professional sports clubs of each sport category are importing a large number of foreign players and coaches every year with an aim to attract more and more sport audience and enhance the overall level of national sports as a whole
的經常性業務。為了提高中國體育運動的水平,為了提高中國各種體育比賽的觀賞性,中國的各個體育項目和職業體育俱樂部每年都需要引進很大數量的外籍球員和教練員。This study introduces the energy consistent method ( ecm ), the ecm potential function, and the new formulae of vibrational force constants which are proposed by weiguo sun and hao feng [ 45, 46 ] recently. the ecm is applied to study the diatomic potential functions for some electronic ground states and excited states of gif, ch, bh, xeo, laf, 7lid, na7li, narb and krb molecules. the ecm potentials are compared with the experimental based rkr ( rydberg - klein - rees ) potentials, ipa ( inverted - perturbation - approach ) potentials, analytical morse potentials, and hms ( huxley - murrell - sorbie ) potentials
本文詳細地介紹了孫衛國和馮灝運用二階微擾理論所導出的高階振動力常數的求解公式、能量自洽法( energyconsistentmethod - ecm ) 、 ecm勢能函數的定義以及用能量自洽法計算穩定雙原子分子體系勢能函數的具體步驟,並將ecm方法推廣應用於cif 、 ch 、 bh 、 xeo 、 laf 、 ~ 7lid 、 na ~ 7li 、 narb和krb等九種異核雙原子分子的十二個電子基態和激發態的勢能函數。As we know, many results on analytic solutions of iterative equations are obtained by constructing a majorant series. for technical reasons, in previous works an indeterminate constant a, as the eigenvalue of the linearization of unknown function at its fixed point, is required to be off the unit circle or lie on the circle with the diophantine condition
已有的許多關于迭代方程的解析解結果都是運用優級數法得到的,並要求一個作為未知函數在其不動點處的線性部分的特徵值的常數不在單位圓周上或者在單位圓周上但滿足diophantine條件。What the practical problems is often gotten is a single variable time series which has a time interval of t, reflect by a lot of interactive physics factor, containing the mark of all variates participating in movement, traditional time series analysis is to analyse going from this array to the form directly it ' s time develops, one dimension analysis loses useful information, the characteristics of phase space reconstruction method is to construct one dimension scalar quantity to high dimension vector, prop the geometry space of the state, show all dynamical information of system in phase space. the characteristic that just constructs again according to the phase space in this text, analyse the time series of responding, use the relevant knowledge of symbol dynamics and reconstruct phase space, put forward a kind of relation degree analysis method of the systematic mathematics model which has theory basis, so reach the correction of calculation mathematics model, make it accord with the actual systematic state
實際問題中常常得到的是一個時間間隔為t的單變量的時間序列,它是許多物理因子相互作用的綜合反映,蘊藏著參與運動的全部變量的痕跡,傳統的時序分析是直接從這個序列去形式地分析它的時間演變,一維分析必然喪失許多有用信息,相空間重構方法的特點是把一維標量數據構造成高維矢量,支起狀態的幾何空間,在相空間中展示系統全部動力信息。本文正是根據相空間重構的特點,對響應時間序列進行分析,利用符號動力學、重構相空間等方法,提出一種有理論依據的系統數學模型關聯度分析方法,從而達到修正計算數學模型,使其更符合實際系統狀態的目的。The method of change partial differential equation into ordinary differential equation is classified, the bifurcation and chaos in nonlinear schrodinger system is detected and the effectiveness of controlling chaos of buckling beam with parametric perturbation method is studied in details. chapter 7 is the summary and conclusion of the dissertation
第六章總結歸納了將非線性偏微分方程轉化為常微分方程的變換法,研究了一維無界區域上非線性薛定諤方程的分岔和混沌性質,解析地研究了用參數周期擾動法控制屈曲梁的混沌運動的效果。While aerobic distance work should be a primary training focus, an aerobic training and speed training will improve your performance times since they enable you to function at higher intensities and to endure high lactic acid levels ( a by - product of short bursts of exercise )
有氧跑步是訓練的主要項目,有氧訓練和速度訓練將增加你的運動次數,因為他們可以使你的身體器官在更高強度運動下正常運作,並能忍受肌肉中的高乳酸(短期劇烈運動的副產品) 。Generally the events of interest are quite rare ( many orders of magnitude slower than the vibrational movements of the atoms ), and therefore direct simulations, tracking every movement of the atoms, would take thousands of years of computer calculations on the fastest present day computer before a single event of interest can be expected to occur, hence the name eon, which is an immeasurable period of time
某些我們感興趣的現象是非常罕見的(例如一些以極小的數量級速度運動的原子) ,所以用當前最為快速的計算機直接模擬、跟蹤一個可能每天僅僅只能唯一觀察到一次的我們期望它能運動的原子,需要花費成千上萬年的計算機處理時間,所以我們將我們的項目命名為eon ,它是一段不可計量的時間。The numeric method is used to calculate the static thermal conductivity, which is compared with the maxwell formula. the dynamic thermal conductivity is derived from the motion of the nanoparticles
用數值模擬方法模擬靜態導熱系數,並與常用的maxwell公式進行比較;從粒子運動的事實出發,建立了動態導熱系數的計算公式。分享友人