球徑計 的英文怎麼說
中文拼音 [qiújìngjì]
球徑計
英文
spheremeters-
The industrial development in shandong should be located on the above - mentioned superior industries, known as the industries which is " inoculated " by the high and new technology and upgraded such as the leading industry like mechanism, electron, petrifaction and etc, or the traditional industry like energy source, textile, foodstuff, metallurgy and etc, or the high and new technique industry like electronic message, biological engineering, ocean and etc. correspond with the development and grandness of these strategic industry, the famousbrand products including the products of the household appliances, the utility type sedan, the refine chemical industrial products, computer software, halobios pharmacy, industrial revelation ware and etc should be created gradually, and then improve the structure of the industrial products
山東省工業發展應定位於上述優勢產業，即經過高新技術「嫁接」和換代升級的機械、電子、石化等主導產業，能源、紡織、食品、冶金等傳統產業，電子信息、生物工程、海洋等高新技術產業。相應于這些戰略產業的發展和壯大，逐步創造出包括家電、經濟型轎車、精細化工產品、計算機軟體、海洋生物制藥、工業新材料製品等在內的名牌產品，並進而改善工業產品結構。隨著中國加入世貿，為應對經濟全球化的挑戰，關于產業競爭力的研究成為一大熱點，但以往的研究都側重於從國家或企業的角度考慮問題，本文試圖從區域經濟的角度研究產業競爭力，探索提升產業競爭力的途徑，為研究中國產業國際競爭力提供借鑒和參考。As it is impossible to machine the helicoid gear surface with large module and a few teeth by gear generating, a four - axis milling was developed in this paper
摘要針對大模數少齒數螺旋齒輪的加工特點，結合漸開線和擺線的性質，利用微分幾何工具計算出該類曲面的法矢，作為選取球頭銑刀半徑的依據。The asteroids are the most important small bodies in the solarsystem, and they mainly lies in the two locations - a main belt between the mars ' s orbit and the jupiter ' s and the near - earth space. the most feature of the orbits of near - earth asteroids ( neas ) is that the semi - major axes of the orbits are nearly equal to that of the earth or the perihelia distances are approximate to or even less than the mean distance between the sun and the earth, thus they could move into inside of the earth ' s orbit, so that they might close approach or even colliside with the earth ( or other planets, such as the venus, the mars, etc. ). the characteristic brings about some difficulties in the numerical research during their orbital evolution, which leads to the failure of the normalization technique in the general removal impact singularities of celestial mechanics methods and the symplectic algorithm which is successfully applied to the investigation in quality. by comparing the computation effects of several common numerical methods ( including symplectic algorithm ), and considering the nature of the movement of the small bodies, the corresponding treatments are provided here to improve the reliability of the computation
小行星是太陽系最重要的一類小天體，主要分佈在兩個區域；火星和木星軌道之間的一條主帶和近地空間.近地小行星軌道的最大特點是其軌道半長徑與地球軌道半長徑相近，或近日距離接近甚至小於日地平均距離，其運動可深入到地球軌道的內部，這將導致該類小行星與地球（還有金星、火星等）十分靠近甚至發生碰撞.這一特徵給其軌道演化數值研究帶來一些困難，包括天體力學方法中一般消除碰撞奇點的正規化處理以及對定性研究十分成功的辛演算法都將在不同程度上失效.通過對幾種常用數值方法（包括辛演算法）計算效果的比較，根據小天體運動自身的特性，給出了相應處理措施，從而可提高計算結果的可靠性Methods : to divide the anatomic area into several parts : sigmoid sinus, jugular bulb, semicircular canal, internal acoustic meats, cerebellopontine angle area, duramater. simulated the partial labyrinthectomy and endoscopic surgery on 20 adult cadaveric specimens, measured correlative data, observed correlative anatomic structure. all data analysied by sas
方法：在20例40側成人屍頭上模擬迷路后徑路橋小腦角區內鏡手術和部分迷路切除術，將相關解剖結構分為乙狀竇、頸靜脈球、半規管、內聽道、橋小腦角區、硬腦膜等幾個區域，分別觀察相關解剖結構及測量相關數據，測量結果用sas軟體進行統計學分析。Especially, the ball mill storage pulverizing system can run sostenuto at optimal state. it ' s applied foreground is amplitude and inaugurate a new approach for the design of thermodynamic automatic control system
尤其是能使球磨機長期運行在最佳狀況，而且應用前景廣闊，為熱工自動控制系統設計開辟了新的途徑。Production in optical engineering - spherometer - ring for spherometer
光學加工.球徑計.球徑計環Designning well tube and drill - hole diameter in order to increase thickness of both annular packing gravel and water - resisting clay, nylon net packing around well tube filters, designing filter layer on the boundary between packing gravel and water - resisting clay and ramming the gravel by working the piston into the well after gravel packing completion and the filling clay for salt - water resisting etc. we succeeded in constructing 3 drinking - water wells in minqin county, proved the affectivity and feasibility of using it and giving a certain technical demonstration of construction of drinking - water well in the same similar to this area
通過孔徑與管徑的調配設計，增大環狀粒料層和止水粘土層的厚度；濾水管外包尼龍紗網；粒料與止水粘土接觸界面上設計反濾層；填粒后先行拉活塞利用水力夯實粒料層，再投粘土球止掉上部鹹水等措施，在民勤縣三口人飲水井施工中取得顯著效果，證明了該套成井工藝的有效性和可行性，有望為同類地區人飲水井施工提供技術示範作用。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。Wenhua sporting goods factory, covering an area over ten thousand square meters, is a specialized manufacturer of snooker tables, american - style pool tables, pingpong tables, soccer tables, pneumatic tables, basket supports and auxiliary parts incorporating product design, manufacture and sale
廣東文華體育用品總部在廣州花都區，廠房佔地面積一萬多平方米，是以設計、生產、銷售撞球臺、乒乓球臺、足球機、風動臺、籃球架、健身器械、室外健身路徑、及各種兒童樂園游樂設施為主的專業體育用品廠。1986, 18 : 301 - 307. 6 hoffmann c, hopcroft j. the potential method for blendingsurfaces and corners. in geometric modeling : algorithms and new trends, farin g ed.,
早在1984年， rossignac和requicha就提出用滾球法進行過渡曲面的設計，但用這種方法得到的曲面表達式比較復雜，而且在滾球半徑較大時容易出現自交的現象。A sil flying head is designed to keep the distance between sil and recording medium in near - field range. a sil optical data storage system is built up when the recording head is combined with sil flying head. meanwhile, using astigmatic focusing error detection technology and twin optical pick - up heads, a novel nontouching nanometer measurement method is developed to measure the flying height of sil, and provides us with a powerful tool to optimize the design of sil fly head
在sil存儲技術研究方面，首先提出一種光學玻璃熱熔加工製作sil的新方法，該方法克服了小半徑球透鏡加工的難題，成功製作出了半球固體浸沒透鏡；設計了sil飛行頭系統，並利用光學頭像散法聚焦誤差檢測原理，設計出一種雙光學頭sil飛行高度測量方案，實現了sil飛行頭飛行高度的測量。This paper mainly aims at the strategic demands for large - aperture lightweight mirror proposed by high - tech development. its main research contents are : select material blank for lightweight mirror according to physical and chemical properties of optical glass ; analyze and calculate the deformation quantity of the mirror with finite element method ; design and optimize mirror body structure of 400 lightweight plane mirror and 450 lightweight spherical mirror, analyze glass cutting principle, design specisl - use grinding wheel structure, select reasonable technological parameters to implement the processing of weight reduction holes on 400 plane mirror ; analyze etching mechanism of hydrofluoric acid, look for the technological parameters such as the optimal acid concentration and etching time etc. ; eliminate the stress of weight reduction holes and micro - cracks on 400 lightweight plane mirror ; discuss the processing principle and
本論文的研究主要是瞄準國家高技術對大口徑輕型鏡的戰略需求而開展的。主要研究內容是：根據光學玻璃的物理與化學性能，選擇輕型鏡坯材料；用有限元法對鏡子的變形進行分析、計算，找出變形規律，優化設計400mm輕型平面鏡、 450mm輕型球面鏡鏡體結構；分析玻璃切削原理，設計專用磨輪結構，選擇合理工藝技術參數，完成400mm平面鏡輕量化減重孔的加工；分析氫氟酸腐蝕光學玻璃機理，尋找最佳酸濃度、腐蝕作用時間等工藝參數，實現400mm平面鏡減重孔應力與微裂紋的消除；討論分離器加工原理和工藝技術特點，完成400mm平面輕型鏡面形加工。First, based on the rapid development trend of the global hi - tech and new - tech industry and aiming at the problem of the inefficient transformation of the hi - tech and new - tech achievements in china, the paper gives a thorough analysis of the supply - demand system, the planning system, the intermediary system, the incentive system as well as the competing system. second, it summaries the general law of the hi - tech and new - tech achievements transformation in china and puts forward some theories and operating models for effectively accelerating the hi - tech and new - tech achievements transformation. third, it puts forward an innovative system conducive for the hi - tech and new - tech achievements transformation
該研究有四項目標：一是依據全球高新技術產業迅猛發展的大趨勢，針對我國高新技術成果轉化效率低的問題，深入地分析了我國高新技術成果轉化（產業化）中的供求機制、計劃機制、中介機制、激勵機制和競爭機制；二是歸納出我國高新技術成果轉化一般規律，提出有效加快我國高新技術成果轉化的理論依據和操作模式；三是構架有利於我國高新技術成果轉化的國家創新體系；四是通過政策與建議篇提出促進高新技術成果轉化的基本途徑和政策措施。In order to utilize the frquency resource adequately and increase the capacity of mobile communication system, the wireless electric wave propagation of existing mobile system always adopts the microcell structure. forecasting the path loss characteristic of electric wave accurately can provide the necessary condition for the layout and design of wireless network, at the same time it is a precondition for the research on the microcell mobile system. the methods of forecasting of wireless electric wave propagation can divide into two parts : one is pluse and respond, that is establish the empirical model based on experimental and statistical data ; the other is ray tracing method, that is establish the deterministic model based on theoretical analyse. the paper discuss the characteristic of wireless signal electric wave transmition in symmetrical atmosphere of earth, and introduce the common path loss transmition model in land mobile communication system, also point out the localization of these models based on experiential methods
而精確預測無線電波傳播路徑損耗特性，則為合理的微蜂窩無線網路規劃、設計提供了必要條件，同時也是研究微蜂窩移動通信系統性能的前提。無線電波傳播預測的方法分為兩類：一是用沖激響應法，即根據實驗、統計所得數據建立經驗性傳播預測模型；另一種是用射線跟蹤方法，即依據理論分析來建立確定性的傳播預測模型。本文首先討論了在地球表面均勻大氣中的無線電波傳播的基本特性，介紹了陸地移動通信系統中常用的幾種電波傳播路徑損耗經驗性預測模型，並指出了這些經驗性傳播模型對于微蜂窩小區無線電波傳播特性研究的局限性。With the three - dimensional ray - tracing program, the simulation of leo - gps occultation is given. the radio path of occultation observation is simulated, and then the excess phase delay is calculated. this work can be used for studying the effects of the neutral atmosphere and ionosphere on the occultation observations and evaluating the performance of the inversion techniques
本文介紹了無線電掩星技術的發展狀況和基本原理，圍繞無線電掩星技術及其應用研究展開諸多研究和探討，主要工作內容如下: 1 、利用全球三維射線追蹤程序，開展leo - gps掩星觀測的模擬研究，以計算掩星觀測時電波傳播路徑、計算大氣引起的附加相位時延等。The numerical results indicate that the deformation within the solid inner core is very small. however, in the fluid outer core, the changes of the displacement with relatively low spherical harmonic degree ( n < 10 ) is very complicated via the radius, due to the resonance near the eigenfrequenies of the core long - period oscillations. while the spherical harmonic degree of the loading is larger than 10, the deformation and the gravitational perturbation in the core are very small, and the earth ' s deformation response is dominantly represented as the radial displacement in the elastic mantle
研究了地球在日月引潮力和表面負荷作用下的形變特徵，數值計算結果表明，在固體內核中的形變很小，由於在長周期核模本徵頻率附近的共振，液核中低階（ n 10 ）位移隨半徑的變化非常復雜，當負荷階數超過10時，地核中的形變和擾動位都很小，地球的響應主要表現為彈性地幔中的徑向位移，且隨深度增加急劇減弱，地表負荷love數與信號頻率的依賴關系很弱，給出了體潮love數計算的一種有效的近似處理方案。Secondly, two groups of disk plows for experiments were manufacturing. finally, orthogonal experiments and secondary regression experiments were respectively designed on the plows and tillage experiment was carried out in an indoor groove under certain research condition. with experimental optimum technology, the effect of the distribution of the geometric non - smooth partial sphere structure cell, partial sphere height and its radium on the tillage resistance was analyzed
通過試驗優化設計技術，考察了圓盤犁刀上幾何非光滑球冠結構單元的分佈、球冠高度和球冠底圓半徑大小對犁耕阻力的影響，確定了三種影響因素的主次關系和各個因素的最優水平，獲得了研究條件下的結構設計最佳方案。The destruction resistant properties of several standard test ore pieces and natural ore blocks of various sizes were measured. the results show that the compression strength of natural ore is far less than that of standard test pieces and has the tendency of increase with the decrease of the size, which suggests that it is unrational to use the compression strength of standard test pieces to represent the destructive strength of rock ore in calculating the ball size for the coarse grinding of metal ores
測定了多種礦石標準試件及不同粒度自然礦塊的抗破壞性能，表明自然礦塊的抗壓強度遠小於標準試件，且具有隨粒度減小而增大的趨勢，也說明金屬礦粗磨機球徑計算中採用標準試件抗壓強度代表巖礦破壞性能是不合理的。An optimizing arithmetic for calculating the best - fit sphere is also proposed, the result shows better accuracy is reached comparing to " three points method ", from 107. 8umrms to 25. 66umrms. during interferometric optics test with null lens, " nonlinear errors " of the testing coordinates will be introduced. a method based on ray - tracing, nonlinear fitting and coordinate transferring is proposed to eliminate these errors
在ccos控制模型及理論計算方面，提出了一種適用於高次離軸非球面最接近球面計算的優化演算法，經計算，某矩形離軸非球面最接近球面半徑的求解精度較傳統的「三點法」有了較大的提高，理論加工余量由原來的107 . 8umrms降低到25 . 66umrms ；提出一種基於磨頭與工件的相對位移量的控制模型，並且開發了阻尼卷積迭代演算法，引入「虛擬加工」的概念進行迭代求解和參數評價。The rtw planner puts you in control of the route planning process
環球旅行計劃程序給予旅行者進行途徑計劃充分的控制力。分享友人