自選系統 的英文怎麼說

中文拼音 [zìxuǎnxìtǒng]
自選系統 英文
discretionary system
  • 自 : Ⅰ代詞（自己） self; oneself; one s own Ⅱ副詞（自然;當然） certainly; of course; naturally; willin...
  • 選 : Ⅰ動詞1. （挑選） select; choose; pick 2. （選舉） elect Ⅱ名詞（挑選出來編在一起的作品） selections; anthology
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 統 : Ⅰ名詞1 （事物間連續的關系） interconnected system 2 （衣服等的筒狀部分） any tube shaped part of ...
  • 自選 : [體育] free; optional
  • 系統 : 1. （按一定關系組成的同類事物） system 2. （有條理的;有系統的） systematic
  1. And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results

    接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。
  2. Even so, by truncating hbv pres gene, we finally obtained some useful " " bailors ", either nontoxic or self - activating, and used them to fish dna fragments of hbv pres interacting protein ( s ) from an ad vector constructed human embryonic cdna library

    我們通過第回軍巨大學碩士學位論文對pres基因分段截短的方法，獲得了對酵母細胞即無毒性作用，又沒有自激活作用的「誘餌」 ，通過它在酵母雙雜交系統中篩選構建於ad載體的人胎肝。
  3. The complete nucleotide sequence of the mitochondrial genome of f. limnocharis was detailedly compared with those of 5 other amphibians. the nucleotide sequences of 22 trna encoded by 6 amphibians mitochondrial genomes were combined and aligned to the homologous sequences of the 11 veterbrate taxa. using teleosts as outgroup, the phylogenetic analyses results show that mp, nj and ml trees all strongly support the monophyly of living amphibians with respect to other living tetrapods and favor a sister group relationship for caecilians and salamanders

    我們在測定了澤蛙線粒體全基因組序列的基礎上，與已知其它的5種兩棲類進行詳細的比較分析，同時選擇了11種高等脊椎動物的線粒體全基因序列，以硬骨魚類做外群，用22個trna基因合併數據進行系統發生重建分析，結果表明mp 、 nj和ml樹都強力地支持現生兩棲類動物為單系群並且蠑螈類和蚓螈類為姐妹群關系（自引導值分別為92 、 99 、 100 ） 。
  4. Automatic inflow system, the synchronous coaxial guide cam shaft chain, belt ( optional ) output system is stable, wearprooff, durable, easy to maintain and adjust without components dancing

    自動進料系統，同步同軸導片凸軸鏈式，皮帶式（可選擇）輸送系統，平穩，耐磨，組件不跳動，使用壽命長，保養容易，調整方面。
  5. The author wish this study win be used in the development of numerical control dividing lathe that can divide into groups of the size for precise measure of thickness of ompressor carboy hatch soft shim the system of pneumatic measure applied widely for component measurement in produce process in factory. the author 100kup a large number related documents over about one and half year for research and went to factory and related research institute for investigating

    並希望將這一研究結果應用於對「壓縮機缸蓋軟體墊片」厚度尺寸精密測量分組的數控分選機的研製。氣動測量系統以其測量倍率高、測量精度高、測量力小（ 0 . 05 1n ） 、對被測工件有自潔作用、測量精度保持性好、抗干擾能力強等優點而被廣泛應用於工廠生產過程中的零件檢測。
  6. The thesis starts with the producing technological process firstly and designs the first domestic automatic product line of the vehicle licence plate ' s semi - products. and through the analysis of the main control objects of the automatic production line, we choose the unwinding tension control system of the aluminium cingulum ' s sticking tache as the research object

    本論文首先從車牌半成品的生產工藝流程入手，對國內首條車牌半成品自動生產線進行了設計，並通過對車牌半成品自動生產線的主要控制對象的分析，選定了鋁帶貼膜環節的反光膜放卷張力控制系統作為本課題的研究對象。
  7. 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。
  8. Invention of selector trunking ; first use of dial telephones in large exchange ( augusta, georgia, usa )

    發明選擇器中繼。大規模交換系統中首次使用自動電話（美國的奧古斯塔州、喬治亞洲） 。
  9. The control system of furnace " s temperature has been widely used in every walk of life, as an important link of repair and manufacture of the electrical equipment such as electromotor transformer etc., soaking lacquer drying craft has some especial requests on drying crafto this article starts with the analysis of drying chamber " s configuration, analyzed its configuration limitation and control function limitation according to the factory " s situation and advances the conception of heated air drying circulation, in addition, this article adopts an intellectualize a / d module, a development sampling tuning - voltage circuit, and presents the method to measure online the insulation resistance of products in order to improve constantly products quality

    而浸漆乾燥工藝作為電機、變壓器等電氣設備的修理、製造中的重要環節之一，對乾燥過程的質量要求有一定的特殊性。該文從乾燥爐的結構分析入手，聯繫到工廠的實際情況分析了結構功能缺陷和控制功能缺陷，提出了熱風循環乾燥的概念，同時，選擇了較為先進的a d板卡、熱電阻信號調理板等專業化智能卡，運用數字pid控制技術，構成了一個較有特色的計算機控制系統。此外，該文還從保證乾燥品質量的角度，採用智能化交流模塊和自製采樣調壓電路的方法，提出了在線檢測產修品的絕緣電阻的方法和手段，以確保企業產品質量不斷提高。
  10. Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece

    將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義
  11. Long focus object lens of three color achromatic aberration is one of two posers of optical design, using this method can get a perfect result. compared with pw method, the first results received from the wave - deviation method are more accurate and more rapid

    使用此數學模型編的光學自動設計程序，也可以說是光學鏡頭設計的一種新方法，即實現自動選玻璃，求解初始結構（曲率半徑r ，厚度d等）和自動校正像差和優化系統等。
  12. Minolta s through - the - lens ( ttl ) phase - detection system with 3 ccd sensor activated by pressing the af button or shutter - release button partway down ; auto manual - focus switchable manually ; multi - dimensional predictive focus control for moving subjects

    備有3ccd感應器的美能達鏡后（ ttl ）相位檢測系統；按下自動對焦按鈕或半按下快門釋放按鈕，可手動選擇自動手動對焦。
  13. A new recognition method based on the chromatic object entropy and its edge histogram is presented, which is used to realize the object recognition in the automated warehouse systems, so as to realize the recognition of the materials automatically

    摘要本文提出了一種基於彩色物體信息熵和邊緣直方圖的識別方法，並將其應用到自動化立體倉庫的貨物揀選系統和入、出庫系統，以實現貨物的自動識別。
  14. Equipped with a world - class optical fibre communications network, hong kong offers a favourable environment for the development of software relating to web - based application, intranet solution, multimedia, edi, e - commerce, video - on - demand and training

    香港擁有世界一流的光纖通訊網路，為開發與網上應用、內聯網解決方案、多媒體、電子數據聯通（ edi ） 、電子商貿、視像自選系統（ vod ）有關的產品，以及進行培訓等提供了有利環境。
  15. Lonworks technique is a new generation technique of control network developed by echelon. it supplies a complete set of control system settlement scheme. as an open flexible system, it becomes the best choice of building automatic system

    Lonworks是由echelon公司開發的網路平臺，它提供了一整套控制系統的解決方案，作為新一代控制網路技術，它以其開放、靈活等特點成為樓宇自控系統的最佳選擇。
  16. We ’ ve designed the integral structures of the system. the structure of the system is partitioned into four parts : self - feeding unit, automatic measurement unit, automatic fraction collector and software. base on the requirement of the measurement, we also designed the way to achieve the purpose and introduce the principles of each part

    本文首先設計了插針測量分選系統的總體結構，根據測量要求和實際情況將系統分為自動上料裝置、測量裝置、分選裝置和測量軟體等四部分，對各部分的原理進行了介紹，並詳細論述了具體實現的方法和難點。
  17. In this thesis, contact pin is the object of study, we develop a suit of system which can achieve the purpose of self - feeding, automatic measurement, automatic fraction, and we ’ ve done a series of experiments

    基於此類需要，我們研製了插針外徑自動測量分選系統，目的在於高精度的完成插針直徑的自動測量分選任務，最大程度上提高生產效率和產品質量。
  18. The content of fpga is downloadable via prom, jtag or the special port on chip by xilinx software. the module can delay input signals from 0ns to 1. 8us stepping by 25ns. it ' s precision is 25ns

    插件經過測試，能在0 71時鐘周期之間，以一個時鐘周期為步長實現對輸入信號的可編程延遲，延遲精度為25ns ，滿足觸發判選系統總觸發邏輯對齊來自各個探測器觸發子系統信號的要求。
  19. The project is funded by the anhui oil pump and oil nozzle factory. the aim of this project is to develop the automatic separation system of injector valve and orifice, based on the pneumatic sensor and the mcu

    本課題來源於安徽油泵油嘴廠，目的是研究一套價格為企業所接受的基於氣動傳感器並以單片機進行數據處理和控制的噴油嘴偶件針閥和針閥體自動測量分選系統。
  20. Pneumatic and automatic separator of injector valve and orifice is based on pneumatic measurement and 8051 mcu, which is used for data processing and control. it can automatically separate injector valve and orifice, whose nominal size is 6 and tolerance is + 10u, with the interval of 1u, accuracy of 0. 5u and speed of twenty pieces per minute around. the automatic separation system of injector valve and orifice has low cost, high separation accuracy, high separation speed and easy operation

    使用氣動噴油嘴偶件針閥、針閥體自動分選系統能實現對公稱尺寸為6 、公差為10的噴油嘴偶件針閥、針閥體按1分選間隔、 0 . 5分選精度的自動分選，分選時的速度可達每分鐘20件左右。
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