medium for propagation 中文意思是什麼

medium for propagation 解釋
傳遞介質
  • medium : n （pl dia ）1 媒介物；傳導體；媒質，基質，介質，介體；中間物；環境、生活情形。2 手段，方法；媒介...
  • for : FOR f o r ＝ free on rail 【商業】火車上交貨（價格）。1 〈表示目標、去向〉向，往。 leave [sail] f...
  • propagation : 持續培養
  1. In this study, systems of rapid propagation of the cultivars such as d. zingiberensis, d. panthaica and d. composite were setup to find the best way to meet the need of producing, and to establish the base of introduction, breeding and cultivar improvement of foreign dioscorea with high diosgenin ; in addition, there are two strategies to obtain polyploids combining with chromosome engineering : screeding natural mutations and mutation breeding were carred out on d. zmgiberensis. exploratively studies were done on rapid propagation of the three dioscorea plants. the result showed : explants of d. pathaica obtained the appreciate propagation efficency on ms + ba1. 0mg / l + naa0. 1mg / l, ms basic medium containing 6. 0mg - 1 ba, l. 0mg - 1 kt and sucrose at 30gl - 1 or 60g1 - 1 was the appreciate medium for microtuberization

    三種薯蕷屬植物離體再生體系培養條件的探索試驗結果表明：黃山藥外植體適宜的增殖培養基為ms + ba1 . 0mg / l + naa0 . 1mg / l ，微型塊莖誘導為ms + ba6 . 0mg / l + kt1 . 0mg / l + 3蔗糖，高濃度的蔗糖含量（ 6 ）能提高微型薯蕷的誘導率，但對其誘導起關鍵作用的還是ba的濃度；菊葉薯蕷增殖效果較好的培養基為ms + ba1 . 0mg / l ，以ms培養基為誘導微型薯蕷的最佳選擇，誘導率可達50 ；盾葉薯蕷最適宜的增殖培養基為ms + ba2 . 0mg / l ，在誘導微型薯蕷的實驗中發現，當ba濃度為6 . 0mg / l和8 . 0mg / l時， 15d左右節間處膨大形成綠色圓球狀小塊，但繼續培養其上則開始分化芽。
  2. A new conception " optical ballast " is introduced for the first time as our knowledge. optical ballast can be used to decrease the variation of beam propagation characteristic due to the disturbance of refractive index of the medium. two types of optical ballast are described

    （ 7 ）首次提出了「光學鎮定器」的概念，並描述了兩種類型的光學鎮定器，它可用於減弱介質折射率的擾變對光束傳播特性的影響。
  3. The different organs of elaeagnus mollis diels were used in this experiment as the explants. after establishing the aseptic propagation system, the aseptic tube stems and leaves were used to study the effect of different exogenous hormones combination and different culture conditions on organgenesis. the optimum medium and culture condition was screened for fast propagation of elaeagnus mollis diels

    本實驗選材為胡頹子科胡頹子屬的翅果油樹，在建立起無菌繁殖系的基礎上，分別以試管無菌莖段和葉片為材料，研究了不同外源激素配比及不同培養條件對其器官分化的影響，從中篩選出適合翅果油樹快速繁殖的最適培養基和培養條件。
  4. For few domestic and international studies of the radio propagation in the overburden of the earth ' s crust, this paper theoretically stresses the propagation problem of low frequency radio wave, including slf wave and vlf wave, in the medium and briefly introduces the theory of scale model testing method

    針對國內外有關電波在地殼覆蓋層中傳播研究工作的空白，本文主要從理論上討論低頻（包括特低頻和甚低頻）無線電波在該種介質中的傳播問題，並簡要介紹縮比模型測量理論。
  5. In electrical communications the information source provides an electrical signal, usually derived from a message signal which is not electrical ( e. g. sound ), to a transmitter comprising electrical and electronic components which converts the signal into a suitable form for propagation over the transmission medium

    在電通信中，信息源提供一個電信號到傳輸器上，這個電信號通常來源於一個非電的消息信號例如聲音.傳輸器由電器件和電子器件構成.它把信號轉化為一個合適的形式，從而在傳輸媒介上傳播
  6. The psm was extended to heterogeneous anisotropic medium and a program for 2d elastic waves propagation was written in fortran. the stable condition of psm for 2d anisotropic media was introduced and discussed. the propagations of elastic waves, excited by point sources in homogeneous isotropic / anisotropic rocks, were simulated

    導出了適用於模擬二維各向異性非均勻巖石中彈性波傳播、以位移為變量的偽譜法公式並編寫了相應的程序，並推導了適用於二維各向異性介質的偽譜法穩定性條件。
  7. The green ' s function for point - source excitation is also very simple in homogeneous media. however, since global basic functions like plane waves occupy the entire domain and point source excitation radiates to all directions, their evolution through a non - homogeneous medium constitutes a problem that may become at least as difficult to solve as that of the propagation of the total field

    例如dirac函數（點源）在空間域可以有精確的定位，但在傳播方向上（波數域）卻毫無確定性；而平面波（波數域的基本解）則具有精確的傳播方向，但其波前卻是無限延伸的，不具任何空間局域性。
  8. In this paper, the authors study the mathematical model for seismic wave propagation in complex underground medium, discuss the boundary element method for solving seismic wave equations in frequency - domain, and investigate the computational formation of separation of wave equations in frequency - domain

    摘要分析了復雜地下介質情形地震波傳播的數學模型，討論了地震波數學模型數值求解的頻率域邊界元方法，並得到波動方程頻率域邊界元法的離散化計算公式。
  9. The characteristic of excitation of the acoustic field is investigated for sources with various frequencies. the effects of an isotropic medium, inclined formation of different azimuth, horizontal or vertical fracture and its width or density on the propagation of the acoustic field are investigated. the fluid in borehole is also investigated

    研究了聲源在不同頻率下的聲場激發特性，考察了井外介質為均勻介質、存在不同傾角的地層界面、存在水平和垂直裂縫以及裂縫寬度和密度等對井內外聲場傳播的影響以及井眼流體對井孔聲場的影響。
  10. Since there are only few papers about the topic, the simulating result have no alternative but to compare with the data of the upper inhomogeneous terrain. the similar trend is found for the two results, and larger propagation attenuation will follow the higher frequency or larger conductivity of the medium

    由於有關覆蓋層傳播方面的文獻資料幾乎沒有，所以只能把結果與地表均勻巖層的數據進行比較，結果表明平面波法和通信公式法計算得出的結果完全一致，並與在地表均勻巖層傳播結果趨勢類似，而且隨著頻率的增高或導電率的增大，傳播衰減也增大。
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