rotational field 中文意思是什麼

rotational field 解釋
有旋場
  • rotational : adj. 1. 旋轉的；輪流的，循環的。2. 【農業】輪作的。
  • field : n 菲爾德〈姓氏〉。n 1 原野，曠野；（海、空、冰雪等的）茫茫一片。2 田地，牧場；割草場；〈pl 〉〈集...
  1. Abstract : the far - field spot characteristics of laser converted by random phase plate are analyzed theoretically, including the shape, size, rotational symmetry and diffractive efficiency of the spots, as well as the distribution of subsidiary spot. by comparing the influence of phase element shape ( triangular, square and hexagonal ) on the characteristics, we found that the random phase plate with hexagonal array structure is more suitable for the beam smoothing in laser fusion

    文摘:從理論上分析了激光經隨機位相板變換后在遠場的光斑特性（包括光斑的形狀、大小、旋轉對稱性、衍射效率以及旁瓣分佈） ，通過比較三種形狀位相元（等邊三角形、正方形和正六邊形）的遠場光斑特性，得知正六邊形位相元結構的隨機位相板更適合於激光聚變中的束勻化。
  2. ( 2 ) the results reveal that the pre - swirl ratio has a great influence on the flow field of the rotating disk, even greater than the rotational reynolds number, and an initial constant is induced in moment coefficient cm and average nusselt number nuave correlations, which does not exist in the case of without pre - swirl

    （ 2 ）分析了預旋系數_ r對該旋轉盤腔流場的影響，定義了一個新的壓力系數c _ p ，該壓力系數c _ p沿徑向位置的變化對特定的旋轉雷諾數re _是一個常數。
  3. The four trainees who just returned from canada were invited to give lectures on special subjects : learn from canadas expertise on husbandry management to realize rotational grazing in north - western sichuan, the application of canadas forage seed production technology in the grass - seed production in pasturing areas in north - western sichuan, and the application of canadas forage grass planting technology in rangeland improvement in north - western sichuan. meanwhile, the four trainers led the participants to visit the pilot pastureland for rotational grazing and the field school of forage grass planting, providing on - site explanation

    特邀參加加拿大牧草技術培訓的四名學員，分別作了「借鑒加拿大放牧管理技術實現川西北牲畜劃區輪牧」 「加拿大牧草種子生產技術在川西北牧區草種生產中的應用」 「加拿大牧草栽培技術在川西北牧區草地改良中的應用」專題培訓，同時，帶領參訓人員到牲畜輪牧示範場，牧草栽培田間學校進行了參觀並進行田間現場講解。
  4. Through training and field visits, the four trainees have mastered canadas advanced expertise on modern animal husbandry in forage grass planting, seed production and rearing of herbivorous livestock. through support from the ccadp, spri has established a pilot pastureland for rotational grazing and a field school of forage grass planting in hongyuan county

    四川省草原科學研究院根據中加合作項目的需求，相繼在紅原縣建立了牲畜輪牧示範場牧草栽培田間學校，四人學成回國后，組織相關科技人員開展技術培訓工作。
  5. This paper presents our research in actuating in - vivo micro - robot based on the capsule endoscope platform by the external power. while seeking secure driving method we take several factors into account, such as driving environment, power transmitting and consuming, motion requirement and controllability, and locating technique. we mainly deal with driving the capsule with spatial gradient magnetic field, so we employ combined electro - magnetic coils, including gradient coils and homogenous coils, which have rotational dof around a translatable patient bed, to compose a controllable uniform gradient which act on the permanent - magnet embedded robot, thereby get an appropriate spatial force and torque to fulfill the anticipant locomotion such as move, stop, pitch and yaw

    基於驅動環境、能量供給和消耗、驅動動作要求及驅動安全性與可控性，定位方案等多方面考慮，尋求安全可靠的腸胃檢查微機器人的外部驅動控制方法，並著重研究直接利用外磁場磁力驅動微機器人:在微機器人內部嵌入永磁性體，利用體外的組合電磁線圈產生加載電流控制的驅動磁場，其中外部的電磁線圈由多組梯度線圈和勻場線圈組合構成，通過繞病床的旋轉以及病床的平移共同控制微機器人所在位置的磁場強度及梯度，作用於微機器人內嵌磁體以獲得空間意義上的必要驅動力和調整轉矩，從而有效地完成驅動動作要求。
  6. From single - phase power supply, the shocks have driven two of the permanent cigang rotor rotary rotary magnetic field, and reducer with calculated design to export different rotational speed and moment, with the corresponding reduction in rotational speed increase moment

    由單相電源供電，振蕩產生兩相旋轉磁場驅動永久磁鋼轉子旋轉，與減速器配合，根據計算設計可以輸出不同的轉速和力矩，隨著轉速減少的相應的力矩增加。
  7. The aims of this thesis are buckling and ultimate strength. its main content is as follows : emphasizes the significance and purpose of the research in buckling and ultimate strength, and reviewing the status in this field, and puts forward the research task ; analyzes and discusses the design formulations for the buckling strength of the ship plating, in which the influence of residual stresses, lateral pressure, cut - outs and rotational restrains is taken into account

    本文以船體板的屈曲和極限強度為研究目標，主要內容有： ?指出研究船體板屈曲和極限強度的意義和目的，簡要回顧了國內外的研究現狀。並提出本文的研究內容； ?考慮殘余應力、側向壓應力、開孔和扭轉約束對于板格的屈曲強度的影響，討論了各個因素影響下的板格的屈曲強度計算公式。
  8. The new stress field mode is exploited to implement a novel rotational stress field piezoelectric micro - motor scheme that enables stress field operation. analysis for both modes of operation is presented along with experimental results. a high - order, efficient scheme for computing both the power and the electric perimeter of the mems piezoelectric micro - motor system is presented along with comprehensive analysis for this class of motor

    應用經典的彈性動力學和壓電學原理，以模型實驗的微觀致動機理為依據，設計了具有新概念的彈性體和壓電換能器結構的旋轉應力場壓電電機，提出並驗證了應力場致動理論，在微觀上統一了各類壓電電機的致動機理。
  9. In recent years, the screw pump gets more and more extensive application with its unique performance in the oil field, in order to improve the output of crude oil, we should select pump of big displacement or increase the rotational speed, but this will make the ground system vibrate seriously, causing the system to be unable to work normally or some spare parts lose efficiency too early

    近年來，在油田現場螺桿泵以其獨特的性能得到越來越廣泛的應用，為了提高原油產量，當選用大排量螺桿泵或增加螺桿泵的轉速時，地面驅動系統將產生強烈的振動，導致系統無法正常工作或系統內的某些零部件過早失效。
  10. The particle - enriched zone moves outwards as the rotational rate increases. by employing steady dc magnetic field to the conventional centrifugal casting method, the distribution of particles is changed. the most uniform distribution is obtained when the magnetic density is 0. 15t

    通過向常規的離心鑄造中引入穩恆直流電磁場，基體中的顆粒分佈得到改善，磁感應強度為0 . 15t時，顆粒的分佈最為均勻，磁感應強度過大時，磁場將會引起基體組織粗化。
  11. During the modeling of hydrodynamic field, the rotational body and subcritical velocity models are utilized

    在水壓場模型的建立過程中，採用了回轉體模型和淺水亞臨界模型。
  12. In large rotating machinery using filmatic bearing ( turbogenerator, air compressor, etc. ) there is a potential trouble from impefect installation or running conditions, a metals " contact between rotors and shells. the trouble is usully called rubbing. the advantage of ae technologe in the rubbing diagnosis and early detection is showed. instead of classical ae characteristic parameters ( counts, amplitude, energy, duration and the other ones ) a new feature extraction by frequency analysis of ae envelop signals is discussed. both research of ae process and field experements indicate that periodic components in the envelop spectrum related to rotational speed increase evidently at the beginning of rubbing production, hence are highly sensitive to the rubbing fault diagnosis. according to the new design an acoustic emission equipment for the rubbing diagnosis named buaa ae testing system is developed and described

    汽輪發電機、空氣壓縮機等採用油膜支撐的大型轉動機械，由於安裝或運行中的原因，在轉子旋轉過程中，可能和器壁發生輕微的摩擦和碰擊，簡稱碰摩.聲發射技術在碰摩發生特別是故障早期診斷上有優越性.本系統的特點是沒有沿用傳統的計數、幅度、能量和持續時間等聲發射特性參數，而是在聲發射包絡信號的頻率分析中進行特徵提取.聲發射發生的過程分析和現場試驗都表明這種方法對碰摩檢測很敏感，在碰摩發生的起始階段，包絡譜中與轉速同步的周期性分量顯著增加.根據這種新的設計思想自行研製了buaa碰摩聲發射檢測儀並對此作了介紹
  13. Through the comparisons of the data for two models with measured data of ship ' s hydrodynamic field, the method of modifying the rotational body model by measured data is presented

    結合船模實測水壓場數據，對兩種水壓場數學模型加以選擇分析，確立了在回轉體建模的基礎上，根據實測數據對其進行修正的方法。
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