脈沖合成 的英文怎麼說
中文拼音 [màichōnggěchéng]
脈沖合成
英文
pulse synthesis-
Method : by laser ablating a multiphase reaction system, various products are obtained by plasma reaction
以脈沖激光濺射多相反應體系,變換固體靶和氣相、液相反應物的不同組成,合成得到不同產物。The pulse pneumatic conveying system has been a important transporting method for grain material, because of lower velocity, higher ratio of blend and a littler gas, as well as shattering less materiel, abrasing pipeline and easy recovery
脈沖氣力輸送裝置以其低速、高混合比、低耗氣量等一系列持點,並由此帶來的被輸送物料破碎少、管道磨損小、產生粉塵少並且易於回收等優點,成為新一代粉粒料氣力輸送設備,並且被廣泛使用。But there has been not correspondingly control system for it by far. ln this thesis a pulse nitrogenous conveying control system based on profibus is designed and achieved on the thinking of modularizing the pulse nitrogenous conveying system, which can be used for different the pulse nitrogenous conveying system and added new control cells. the thesis reviewed systematically the pulse nitrogenous conveying system in practical, and makes the understanding that the system is composed of standard gas storage cell, conveying equipment cell and target container ceil. then a common modularized control system project is designed and achieved by structurized programming orienting process, which consists of four control models, respectively for gas storage cell, for conveying equipment cell and for target container cell
本文綜合實際使用的氮保護脈沖氣力輸送系統,把氮保護脈沖氣力輸送系統分為標準化的氣源設備單元、發送設備單元和目的料倉設備單元,在此基礎上,設計了用於氮保護脈沖氣力輸送系統的通用模塊化控制方案,採用面向過程的結構化編程思想,基於profibus現場總線,實現了組成該方案的四類控制模塊:氣源單元控制模塊、發送單元控制模塊、目的料倉單元控制模塊和通訊處理控制模塊。For electrodeposition by dc methods, the metals deposite uninterrupted and the particles were also embeded uninterrupted into the coatings ; for electrodeposition by pc method, the particles with biggish volume were desorbed from the coatings and returned to the electrolyte again owing to the presence of pulse interval ; for electrodeposition by prc method, the particles carried positive charges are much more easy to desorb from the coatings owing to the effecf of reverse pulse current combined with pulse interval, in addition, the reverse pulse current also could dissovle the metals, further accelerates the desorption of particles, thus the particles size embeded in the coatings by prc method is the least
直流電沉積時,基質金屬的沉積連續進行,粒子在電極表面不間斷嵌入鍍層;單脈沖電沉積由於脈沖間歇的存在使得具有較大體積的粒子會脫附,重新回到溶液中;採用周期換向脈沖時,反向脈沖電流使表面荷正電的較大的粒子更易從電極表面脫附,同時,反向脈沖電流對基質金屬的溶解作用,也會促進粒子的脫附,因此鍍層中復合粒子尺寸最小。隨著鍍層中粒子復合量的增加,三種鍍層的晶粒都明顯細化,說明al _ 2o _ 3的存在阻止了晶粒的長大,提高了電沉積過程中晶核的形成速率。Synchronization of full - solid high - stability nanosecond pulse sources
全固態高穩定度納秒脈沖源的相干合成技術Sar based on pulsed radar technology is unfit for uav because of its complexity and weightiness
基於脈沖雷達技術的合成孔徑雷達由於其設備的復雜性和重量不適于安裝到無人機上。The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering
本文從星載雷達的星地幾何關系入手,舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型,研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法,並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體,完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析,最後完成雷達回波信號的模擬。In this article, firstly the background of the textile trade conflicts within sino - us or sino - euro are introduced, thus learn that how to discern and dodge the foreign trade risks, how to choose the appropriate investment projects have already become one of the most important questions for exporting companies on foreign trade affairs well - known as high investment and high risk. so the main text makes a risk analysis qualitatively and quantitatively on a textile - exporting trading company from three angles of statistic 、 game theory and portfolio theory, which is the main content that we studied. firstly, the statistic article adopts data of the transaction closing price of the textile clothing index in shenzhen stock exchange at the end of each quarter as well as several other kinds of data reflecting the macro - economic changes, performs an empirical analysis of these data according to the theory of co - integration test 、 granger cause test and impulse response function of time series in economitric, and learn that the impact to ti is more obvious by the economic index reflecting local commodity price level and economic prosperity degree home and abroad, as well as the impact degree and the time lag degree, and knows the macro - economic risks faced by textile business enterprises ; after that by the game theory angle we analyze exactly the managing risks faced by one textile export corporation named beauty. from the game expansion chart the system arrangement between censor ways by exportation goal countries and exporting strategies by the exporting enterprises has been analyzed. involving the benefit assignment between them both the limited rounds and infinite rounds negotiations of cooperation games have been studied, and then country responsibility and the enterprise managing risks on foreign trade affairs and so on have been analyzed exactly ; in order to realize the investment multiplication in the certain degree to disperse the risk, the
本文首先介紹了中美、中歐紡織品貿易爭端的來龍去脈,由此可知在涉外貿易這種以高投入、高風險著稱的行業里,如何甄別和規避外貿風險、如何選擇合適的投資項目已經成為外貿企業的首要問題。因此,正文分別從統計學、博弈論和投資組合三種角度對涉外紡織品貿易公司風險進行了定性和定量的分析,這也是本文的主要研究內容。首先,統計學篇選取了深圳證券交易所行業分類指數?紡織服裝指數( ti )每一季度末的交易收盤價和若干種反映宏觀經濟變化的指標,利用計量經濟學中時間序列的協整檢驗、 granger因果檢驗和脈沖反應函數等理論做實證分析,從而得知反映國內物價水平和國內外經濟景氣程度的經濟指標對紡織板塊上市值的沖擊比較明顯,且可知沖擊程度和時滯度,進而分析出涉外紡織企業所面臨的宏觀經濟風險;接著,從博弈論的角度具體分析一家紡織品出口公司( beauty )的外貿活動所面臨的各種經營風險,該篇從博弈擴展圖入手,分析了出口目的國審查方式與本企業出口策略之間的制度安排;並圍繞雙方的利益分配,研究了有限回合和無限回合合作談判博弈,然後具體論述了國家責任和企業涉外經營風險等問題;在一定程度上為了實現投資多元化來分散風險的目的,投資組合篇從經典的markowitz模型著手,在一些特定條件的限制下,給出了一個相應的投資組合模型。Based on the doppler effect and pulse coherence technique, synthetic aperture radar ( sar ) breaks through the azimuth resolution limitation imposed by real aperture antenna. in combination with the pulse compression technique, two - dimensional high resolution imagery to distant targets can be realized
合成孔徑雷達( sar )利用以多普勒頻移理論和脈沖相參為基礎的合成孔徑技術,突破了實孔徑天線對方位向分辨力的限制,與脈沖壓縮技術相結合,實現了遠距離目標的二維高分辨成像。When the rf pulse is combined with magnetic field gradients, a spatially encoded signal is produced that can be detected and translated into images
當射頻脈沖與磁場梯度聯合起來時,我們可以探測到一個空間編碼信號的產生並且將它轉變成圖像。( 2000 ). the neutron irradiation is assumed to derive primarily by the reaction 13c ( a, n ) i60 with a minor contribution from the marginal burning of 22ne through the channel 22ne ( a n ) 23mg in the final, high temprature phase of each flash. and we considered the influence of the various parameters such as the initial core mass, the envelope mass, the mass - loss rate, the overlap factor and the delution factor etc., and we vary their value with the pulse number
本文採用分叉s -過程反應通道,以~ ( 13 ) c ( , n ) ~ ( 16 ) o 、 ~ ( 22 ) ne ( , n ) ~ ( 25 ) mg為雙脈沖中子源,用最新的中子俘獲截面,利用gallino和busso等人給出的agb星三殼層核合成模型,考慮到核心質量、挖掘程度、重疊因子、稀釋因子及星風質量損失率隨脈沖數的變化,詳細計算和研究了各個金屬豐度情況下的3m 。Advantages, disadvantages and limits of arm are thoroughly examined using signal processing methods. based on the above, incoherent and coherent two - point - source decoy methods and modified coherent two - point - source decoy methods to deflect arm are brought forward. arm ’ s homing heads are generally of mono - pulse structure, so coherent two - point - source ’ s interference resembles that to mono - pulse radar except that interference to radar belongs to far field scope, but interference to arm varies from far field to near field because relative distance drastically changes between the homing head and the two - point - source with missile ’ s homing head continually approaching the target
Arm的導引頭一般為單脈沖體制,因此,相干兩點源對導引頭的干擾類同於對單脈沖雷達的干擾,不同的是:對雷達的干擾都是遠場,而導引頭隨著導彈不斷接近目標,兩點源與導引頭的相對位置發生劇烈變化,由遠場變化到近場;導引頭天線口面上的合成場也發生了大的變化,相位波前的畸變產生干擾,這就是相干兩點源誘偏的基本思想。A photograph transmitted by radio waves, each image point being reproduced by a received electric impulse
無線電傳真通過無線電波傳送的照片,圖像上的點由接收到的每一個電脈沖重新合成Synthetic aperture radar ( sar ) is a new type of radar system developed since 1950 ' s. it breaks through the resolution limitation imposed by real aperture. with pulse compression technology, two - dimensional high resolution to distant targets can be realized
合成孔徑雷達( sar )是五十年代發展起來的一種新型雷達體制,它利用合成孔徑原理,突破了實孔徑天線對解析度的限制,並結合脈沖壓縮技術,可以對遠距離目標進行方位向和距離向兩維高分辨成像。The processes and characters of synthesis reaction for ni / al and ti / al under the influence of lower pulsating electric current are researched
研究了在較低的脈沖電流作用下ni al和ti al的合成工藝過程與特點。This paper ' s study is focused on the principle of bistatic sar on the basis of giving a brief introduction of sar principle, including azimuth resolution, mapping width, focusing deepness, pulse repetition frequency limitation and radar equation etc. then the paper studies the special form of bistatic sar with stationary transmitter
在簡要介紹了合成孔徑雷達的成像原理后,本文著重從原理方面對雙站sar進行了分析,討論雙站sar的方位向解析度,測繪帶寬,聚焦深度,脈沖重復頻率限制,雷達方程等問題,然後對發射機固定的雙站sar這種特殊的雙站sar模式進行分析。The primary aim of the single chip microcomputer circuit of this project is data collecting, it applied the invention monopoly of professor zhang guanghui and professor peng donglin of chongqing university, make use of the high frequency inserted pulse, and join together the software to constitute subsidiary calibration distributed on equal time, complete the task of on - line subdivision in the dynamic measure process, finally up pass the data to pc, pc handle it and get examination result
下位機是硬體集成電路,利用重慶大學張光輝教授、彭東林教授的發明專利「計算機對脈沖信號的細分與辨向新方法」 ,附加頻率極高的外部插入脈沖,結合軟體構成按時間均勻分度的輔助標尺,實現動態測量過程中采樣點的實時細分,最終完成數據採集任務;上位機主要是軟體部分,利用pc機接收下位機的採集數據並進行分析處理,得出檢測結果。In this thesis, a high - frequency variable polarity arc welding power supply was investigated, which consisted of two independent power sources, the variable polarity power supply and the high - frequency pulse one, having advantages both of them
本文針對鋁合金焊接研製了一種新型電源,所研究的高頻變極性弧焊電源採用雙電源結構,由變極性電源和高頻脈沖電源組成,綜合了兩者的優點。Subsidized by the national natural science foundation of china, " tenth five - year " plan of hubei province and so on, this dissertation systematically discussed the author ' s researches on synthesis and deformation of ni / al and ti / al system intermetallic compound
本文在國家自然科學基金、湖北省「十五」重點攻關計劃等基金支持下,系統地論述了作者在ni al系和ti al系金屬間化合物合成與成形的電脈沖效應方面研究成果。Adopting single pulse neutron exposure 22ne ( a, n ) 2dmg and the updated neutron cross section, making use of the core helium burning model of the single neutron exposure theory, we calculate the s - process nucleosynthesis in massive stars at different mettalicity and compare the results with the solar s - weak component
我們採用單脈沖中子源『 zne ( a , n ) zsmg ,採用最新發表的中子俘獲截面,用中心氦燃燒模型計算了各金屬豐度情況下15m m叼0m 。的大質量星的s過程核合成,並將所得結果與太陽的s刁分量進行比較。分享友人