脈動推進 的英文怎麼說
中文拼音 [màidòngtuījìn]
脈動推進
英文
pulsing feed- 脈 : 脈名詞1. (動脈和靜脈的統稱) arteries and veins2. (脈搏的簡稱) pulse 3. (像血管的組織; 連貫成系統的東西) vein
- 推 : 動詞1 (向外用力使物體移動) push; shove 2 (磨或碾) turn a mill or grindstone; grind 3 (剪或削...
- 進 : 進構詞成分。
- 脈動 : [物理學] [天文學] pulsation; pulsing; pulse; ripple; impulsive motion; pulsating; panting; loping...
- 推進 : 1 (推動工作 使前進) push on; carry forward; advance; give impetus to 2 [軍事] move forward; dri...
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And is it the same as under radiation heating ? do the special electric and magnetic fields produced by bpec accelerate atom diffusion ? understanding the above questions fully is a key to expose the mechanism of pecht
在脈沖大電流加工過程中原子是如何擴散的,與一般的加熱燒結、焊接是否一樣,脈沖大電流形成的特殊電場及磁場是否對原子的擴散有大的推動作用,弄清這些問題成為進一步揭示脈沖大電流熱加工機理的關鍵。By the institutional - analysis tool of new institutionalism, this article will try to arrange the research on the social capital theory, define the meaning of social capital, and build a relation between social capital and modern state institution building, so that it will give an explanation on the difference of state institutional change performance in each society. consequently this article will make the research and appliance on the social capital in the area of political science advance toward a higher stage, and enlighten our thinking about much problem on the modern state institution building of our nation
本文試圖運用新制度主義的制度分析工具,在理清社會資本理論研究的脈絡基礎上,對社會資本的內涵作出系統的界定,嘗試發現社會資本和現代國家制度構建之間的互動關聯,解釋造成不同社會國家制度變遷績效差異的原因所在,進一步推進社會資本理論在政治學領域的應用和研究,並啟發我們對我國現代國家制度構建諸多問題的思考。In chapter 3, the subgrid eddy - viscosity model for large eddy simulation is applied to calculate the three dimensions unsteady periodic turbulent flow in yantan francis turbine. the pulsating characteristics of some main physical parameters in flow field are found. the calculated axial water thrust of hydraulic turbine agrees with the model - test value
第三章採用大渦模擬亞格子渦粘模型,對巖灘混流式水輪機的流場進行三維非定常湍流分析,得到了流場中各物理量的脈動特性,計算出ms的軸向水推力與模型試驗值大小相當;同時論證了對于下機架承重的混流式水輪發電機組可採用其推力軸承負荷作為水電站廠房振動的最大垂直激振荷載。The direct lateral force control is that more than one hundred small jet engines are installed around the missile before the barycenter. by firing up these engines produce impulse propelling force in order to adjust the position of the missile
姿控直接力控制方式是在導彈四周重心前徑向安裝的很多個小型噴流發動機,控制噴流發動機點火,產生脈沖推力,對導彈進行姿態調整。Finally, by practical test, experimental data obtained show that the dynamic thrust measuring system is dramatically available and successful. especially, it shows that when the impulse width is 20ms and the duty ratio is 1 : 3, the measured results are stable and reliable. hence, the system designed here can meat the test requirements of the actual applications, and the technology studied in the thesis also give a good foundation to future research work
最後,系統建成以後,通過多次調試試車、考核試車和實際型號試車的考核,試車結果表明,該系統的設計是成功的,動態推力數據穩定、可靠,可滿足發動機以20ms脈寬工作,占空比為1 : 3的情況下,進行發動機的動態推力性能指標測試,滿足實際應用的需求,為進一步進行動態推力測試技術研究奠定了良好的基礎。The satisfying demand of customers " needs is responded through the aspects in quality, cost, delivery time limit etc. a prosperous development structure is formed. that is product with no adventure, development with no wasting, and production with no wasting. thus it is very helpful to improve management of enterprise activity and increase enterprise vigor, but the more important, consciousness of staff is basically altered to use effective way in enterprise, regard manpower as core, increase consciousness of the whole participation, construct a system to prevent disaster harmful trends and wasting from happening and facilitate the change of management conception at the same time
本文介紹了建設集團在2000年度下半年導入tpm活動(全員參加的生產經營改善活動) ,確定了質量、設備、生產、技術、成本、安全等六個方面的推進方向,在銷售、開發、購買、製造各個環節進行了實施,整個改善活動實施中以組織為脈絡,以現場為背景,以人力為核心,以管理為手段,以產品為結果作為切入點,把開發、生產及銷售過程作為企業生產經營改善的突破口,從質量、成本、交貨期等方面及時響應客戶所需產品的滿意要求,使公司形成了市場需要風險為「零」的產品,開發浪費為「零」 ,生產浪費為「零」的格局。The phase matching and group velocity matching conditions of type - i and type - ii second harmonic generation ( shg ) are obtained according to the momentum and energy conservation laws. the group velocity delay of ultrashort pulse shg on clbo and the crystal length decided by the group velocity delay are analyzed and compared with bbo ' s
從動量守恆、能量守恆出發推導得出了超短脈沖倍頻的類、類相位匹配和群速匹配條件,對clbo晶體用於超短脈沖倍頻時的群速延遲以及由群速延遲決定的晶體長度進行了分析和數值模擬,並與bbo晶體進行了比較。The calculation formulas for velocity coefficients 2 and 5 for the throat and throat inlet section were deduced from the theoretical research on the velocity coefficients in time - averaged basic equations by use of the unsteady momentum equation and time - averaged value calculation method
摘要運用非恆定的動量方程和時均值計算方法,對脈沖液體射流泵時均值基本方程中的流速系數進行了理論研究,推導出了喉管和喉管進口段流速系數2和5的計算式。In this paper, on the basis of the analysis of gear pimp working principle, the mechanism of flow pulsation and methods of reducing flow pulsation are pulsation are studied. the computing formula of transient flow rate and the coefficient of flow pulsation are deduced. the relationship between the gear pump flow pulsation and the construction parameters of the gear is studied
本文在齒輪泵工作原理和流量脈動產生機理的基礎上,首先從理論上推導了齒輪泵瞬時流量和流量脈動系數的數學模型,分析了齒輪泵的輸出流量脈動與泵齒輪各結構參數之間的關系,並對某型齒輪泵進行模擬分析研究,給出了齒輪泵的流量脈動分析結果。If project ntfp development activities are successful, the experience can be replicated in other part of the qinling mountain
如果非木製森林製品的開發活動取得成功的話,那麼,該開發經驗可以在秦嶺山脈的其它地區進行推廣。Our research found that, the main reason which led to the oscillation of jet and arc voltage was the oscillation of propellant flowrate. the oscillation of flowrate was caused by the oscillation of water evaporation in pipes
本文的研究發現導致水電弧加熱發動機羽流和電壓脈動的主要原因為推進劑流量供給的脈動,而供給流量的脈動是由於水在管內汽化的脈動引起的。It preliminarily establishes a set of test theory and technical approach to wind tunnel test. specifically speaking, it includes following work : ( 1 ) theoretical analyses on key parameters of ao effect were made. from maxwell equation, the computation formula for focusing intensity of ordered disturbance and the computation formula for pulse peak intensity were derived
初步建立起了一套氣動光學風洞測試試驗的理論和技術,完成的主要研究工作有: ( 1 )從理論上進行了氣動光學主要參數的分析,從麥克斯韋方程出發,推導了有序擾動的聚焦強度的計算公式及脈沖峰值強度計算公式。Experimental results confirmed this assumption : during the interstimulus interval ( isi ) ranged from 33 to 83 ms, with the isi luminance approximated to the mean luminance of the stimulus grating, a novel okn elicited by the intermittent display of stationary gratings was observed and recorded. it can be labeled as " intermittent - display - grating induced okn " ( idg - okn ). in the second part, considering that the biphasic visual impulse resp onse is the feature of the magnocellular ( m - cell ) pathway, and the m - type ganglion cells are damaged in the primary open - angle glaucoma ( poag ), we presumed that idg - okn of poag could differ strikingly from that of normal subjects
結果顯示,當間歇刺激間隔( interstimulusinterval , isi )在33 83ms范圍內, isi期間亮度近似為刺激光柵平均亮度,我們觀察並記錄到這種新型的靜止光柵誘發的oknintermittent - display - gratinginducedokn ( idg - okn ) ( magnocellular )路特性,而且原發性開角青光眼( primaryopen - angleglaucoma , poag )是m型視網膜神經節細胞受損,因此我們推測,基於雙相視覺脈沖反應的idg - okn在poag病人與正常人比較中很可能出現顯著差2間歇刺激,對11隻poag眼和14隻正常眼進行對比眼動實驗。9. a fuzzy reasoning controller is designed to improve the performance of the mentioned disturbance observer. as the motor speed and load torque varying, the parameter of the disturbance observer can be changed by the fuzzy controller based on experiences. the pulsating torque can be compensated more strictly in a extended range
9 、對基於干擾觀測器的轉矩脈動控制系統進行了改進,設計了一種模糊推理控制器,根據電機速度和負載轉矩的變化調整干擾觀測器的增益,保證了轉矩脈動控制系統的控制精度,並擴大了其運行范圍。The development of northeast asia ' s international co - operation in ecomony has been advancing slowly on acconnt of various impediments. however, in recent years, confronted with the trend of regionalization and integration of world economy, the countries in this region, one ofter another adjusted their internal and external polices to improve economical co - operation with any other countries so as to implement the strategies of further developing the national economy. as a result, this co - operation is moving more and more towards a desirable orientation. nevertheless, it has to be pointed out that all the impediments mentioned above which will not be removed in a short passage of time, will restrict the international economic co - operation in an all - round way. the key to the development of northeast asia ' s international economic co - operation is that subregional co - operation will promote regional co - operation, and multilateral and one - iterm co - coperation will promote multilateral and all - round co - operation
受多種因素的制約,東北亞區域經濟合作發展一直較為緩慢,近年來在世界經濟區域集團化和一體化浪潮的強勁推動下,東北亞各國紛紛調整內外政策,把加強同本區域內其他國家間的經濟合作作為促進自身經濟發展的重要戰略選擇,這使東北亞區域經濟合作日益朝著樂觀的方向發展,但由於種種制約因素無法在短時間內根本消除,東北亞全區域和全面性的經濟合作還無法展開,以次區域合作帶動全區域合作、以多邊單項合作帶動多邊全面合作乃是東北亞區域經濟合作發展進程的基本脈絡。Oscillations of solutions for even - order linear differential equation with impulses are considered and some sufficient conditions for oscillation of solutions are obtained, which improve and popularize some results in parts of the relative references
摘要討論了偶數階線性脈沖微分方程解的振動性,得到了一些充分條件,改進並推廣了部分文獻的相關結果。Methods : 30 patients of vertebroarterial cervical spondylopathy were treated by traction tuina and neck exercise and compare the clinical efficacy with the control group
方法:對30例椎動脈型頸椎病患者採用牽引推拿配合頸部功能鍛煉治療,並與牽引推拿組進行療效比較。First, this paper not only introduces the basic principle, the history, the category and the control of linear motor but also shows the development of the control system and technology of motor. second, the method of pid control and the technology of pulse width modulation are expatiated, as well as their application in linear - motor - driven servo syetem. third, this paper describes the hardware structure including its operation principle of the control system of the dsp based linear - motor - driven suspending push - type convey system
文章首先介紹了直線電機的基本原理、發展歷史及其分類方法,並簡單闡述了直線電機的控制方法;然後介紹了電機控制系統及技術的發展,進而分析了pid控制方法和脈寬調制技術,及其在直線電機驅動的伺服系統中的應用;接著介紹了基於dsp的直線電機驅動的懸式推掛物流傳輸控制系統的硬體結構及其工作原理,並闡述了直線電機驅動的懸式推掛物流傳輸系統控制的軟體實現,介紹了各個程序模塊以及速度的檢測方案。分享友人