磁針方向 的英文怎麼說

中文拼音 [zhēnfāngxiàng]
磁針方向 英文
magnetic course
  • : 名詞1. [物理學] (磁性; 能吸引鐵、鎳等的性質) magnetism 2. (瓷) porcelain; china
  • : Ⅰ名詞1 (縫衣物用的工具) needle 2 (細長像針的東西) needle like things 3 (針劑) injection; sh...
  • : Ⅰ名詞1 (方形; 方體) square 2 [數學] (乘方) involution; power 3 (方向) direction 4 (方面) ...
  • 方向 : direction; orientation
  1. Meanwhile, based on the magnetic material theory, a complete analysis and summary are carried out on the three crystal structure and technology theory ; especially the ingredient analysis is made on the microscopical morphology and x - ray diffraction and its mixtures existence and relevant metallurgy about the typical second resource such as coldrolling iron and oxide red, steelmaking sludge and feso4 based on the practeal investigation of the pre - burning materials in domestic products plant, especially the analysis on the domestic markets and components, and connecting with reality and material characters in panzhihua iron and steel ( group ) cmpany, we established the product orientation and developing direction in panzhihua iron and steel ( group ) company ; after carrying out the technology reform on the old no. 1 magnetic product plant of enterprise company, making a detailed study on the various conditions for establishing a plant, the feasible research report is formed of 1400 tons ( per year ) feo preburning material and 3000 tons ( per year ) middle and high quality magnetic products ; so a necessary and reliable supports are provided both theoretically and practically for the development of the magnetic industry in panzhihua iron and s teel ( group ) cmpany

    同時,對性材料的理論基礎,尖晶石、鉛石、石榴石三大晶系結構以及其工工藝理論進行了較為全面的歸納、分析和總結;尤其對攀鋼產生的二次資源如冷軋鐵紅、煉鋼污泥、硫酸亞鐵等三種典型原料分別作了成分分析、微觀物理形態以及x光衍射分析、其夾雜物的存在形式及相應的金相分析。對國內鐵氧體性材料的預燒料及件生產廠家的工藝、設備、技術、成本、質量狀況進行了實地的調研,特別是對國內性材料的市場及競爭對手進行了詳盡的分析,在此基礎上,結合攀鋼實際及原料特點確立了攀鋼發展材產業的產品定位及發展;對企業公司原有件一廠進行了技術工藝改造,對建廠各項條件進行了詳細的分析,形成了了年產14000噸年鐵氧體預燒料以及3000噸年中高檔件產品的可行性研究報告,從理論上和實踐上為攀鋼性產業的發展提供了必要的可靠的依據。
  2. The massive magnetic field of a powerful mri machine aligns the nuclei of the atoms in the same direction, much as a magnet pulls a compass needle

    一臺效能強大振造影儀的強大場能使原子核往同一排列成行,就好像鐵吸引羅盤的指一樣。
  3. Firstly, on the basis of analysis of needham ' s own investigation method and premise, the paper makes a study on the various solutions to needham ' s problem both at home and abroad. with regard to its deficiencies, it further explains the possibility and feasibility of nonlinear study upon the problem and makes a philosophical analysis of the nonlinear explanation

    在對李約瑟本人的研究思路和前提假設利弊評析的基礎上,對國內外「李約瑟難題」的解決案進行了分析;進而,對其不足,闡明了非線性研究視角轉的可能性和現實性,並求華才嘗頤星早蓉靈「孕洶久琴題」劣淤鰭邏澎尹對非線性解釋進行了哲學分析。
  4. Aim at the dtc ' s blemish mentioned above and the direction of dtc technique development, the dissertation put great emphasis on the work as follows, with an eye to exalt dtc system function : ( 1 ) a new speed - flux observer of an induction motor is proposed to enhance the accuracy of flux observing, which is an adaptive closed - loop flux observer and different from the traditions. a new adaptive speed - observation - way is deduced out according to the popov ' s stability theories ; ( 2 ) to improve the performance of dtc at low speed operation, we have to exalt the accuracy of the stator flux estimation and a new way of bp neural network based on extended pidbp algorithm is given to estimate and tune the stator resistance of an induction motor to increase the accuracy of the stator flux estimation ; ( 3 ) digital signal processor is adopted to realize digital control. an device of direct torque control system is designed for experiment using tms320lf2407 chip produced by ti company ; ( 4 ) bring up a distributed direct torque control system based on sercos bus, sercos stand for serial real time communication system agreement which is most in keeping with synchronous with moderate motor control ; ( 5 ) the basic design frame of the hardware and software of the whole control system is given here and some concrete problem in the experiments is described here in detail

    對上面提到的直接轉矩控制的缺陷和未來直接轉矩控制技術發展,本論文重點做了以下幾個面的工作,目的在於提高dtc系統的綜合性能: ( 1 )提出一種新型的速度鏈觀測器,新型的速度鏈觀測器採用自適應閉環鏈觀測器代替傳統的積分器從而提高鏈觀測的精度,並且根據popov超穩定性理論推導出轉速的新型自適應收斂律; ( 2 )改善系統的低速運行性能,主要從提高低速時對定子鏈的估計精度入手,提出了一種提高定子鏈觀測精度的新思路? ?利用基於bp網路增廣pidbp學習演算法來實時在線地修正定子電阻參數; ( 3 )採用數字信號處理器dsp實現系統全數字化硬體控制,結合ti公司生產的tms320lf2407晶元,設計了直接轉矩控制系統的實驗裝置; ( 4 )提出了基於sercos總線網路化分散式的直接轉矩控制系統, sercos ( serialrealtimecommunicationsystem )是目前最適合同步和協調控制的串列實時通信協議; ( 5 )基本勾勒出整個控制系統的硬體和軟體設計基本框架,詳細描述一些實驗中的具體的細節問題。
  5. The general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod, tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges

    簡述20年來中國無損檢測中偶板子理論研究的概況和進展,主要介紹偶極子,有限長偶極線和極帶,粉顆粒的受力,化場粉顯現缺陷的影響,棒料、管材和鋼的縱化,工件表面溝槽深度對其引起漏場的影響,周化時工件底棱上的雜亂顯示成因,圓盤邊緣柱面上溝槽內外漏場的解析表達式和介質對兩個點荷間力的影響等。
  6. The main work done in the paper is as follows : 1. satellite attitude dynamics modeling study : for the earth - oriented three - axis stabilized satellite, a precise attitude dynamics model is established, considering the influence of the environmental disturbance, such as the gravity, the sun radiation, the earth magnetic field and the atmospheric resistance

    本文的主要研究工作如下: ( 1 )衛星姿態動力學建模研究:對對地定三軸穩定衛星,考慮了重力梯度、太陽輻射、大氣阻力、地球場等環境因素對衛星的影響,建立了較精確的衛星姿態動力學模型,同時又建立了四元素描述的姿態運動學程。
  7. Abstract : the general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod, tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges

    文摘:簡述20年來中國無損檢測中偶板子理論研究的概況和進展,主要介紹偶極子,有限長偶極線和極帶,粉顆粒的受力,化場粉顯現缺陷的影響,棒料、管材和鋼的縱化,工件表面溝槽深度對其引起漏場的影響,周化時工件底棱上的雜亂顯示成因,圓盤邊緣柱面上溝槽內外漏場的解析表達式和介質對兩個點荷間力的影響等。
  8. Naturally, people have wondered whether pigeons might have a built - in compass - - something that would tell them about the direction of the earth ' s magnetic field

    自然,人們一直想知道信鴿是否有一種內在的指南?一個能使其知道地球的什麼東西。
  9. The contributions done are as follows : according to the mathematical model of doubly fed motor and the theory of vector control, a unit power factor of rotor control scheme is proposed. in the doubly fed adjustment system, in order to control magnetic torque of motor this scheme is designed by controlling the reverse direction between rotor voltage and current to keep the vertical direction between rotor current and flux. it is known from theoretical analysis that for partly decoupling this scheme is only effective under sub - synchronization speed, but not control the system and obtain steady state since speed adjustment system ca n ' t adjust the magnitude of rotor flux under sup - synchronization

    而傳統的無速度傳感器雙饋調速矢量控制系統,由於採用鏈定法,在同步速附近存在較大的工作死區,對上述問題,本文做了如下的研究工作:本文從雙饋電機的數學模型出發,根據矢量控制的基本原理,提出了一種轉子側功率因數為1的雙饋電機矢量控制案的設想,即在雙饋調速時採用轉子電流定法,並控制外加轉子電壓與轉子電流始終反相,以保持了轉子電流與轉子鏈矢量垂直,通過控制轉子電流的大小來達到控制電機電轉矩的要求。
  10. This paper describes the study of an original radial - axial mb biased with permanent magnet, including its operation principle, mathematic model, the design of the structure, and so on. a method of design and checkout of the mb is put forward

    本文的研究是對一種高效緊湊的新型永偏置徑軸承展開的,闡述了這種軸承的工作原理,對其數學模型及結構設計進行了研究,然後提出了這種軸承的設計、校核法。
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