propagation material 中文意思是什麼

propagation material 解釋
增殖材料
  • propagation : 持續培養
  • material : adj 1 物質的（opp spiritual）。2 身體上的，肉體上的；物慾的，追求實利的；卑俗的。3 有形的，實體的...
  1. For the negative uniaxial crystal material, the principal mode is a hybrid guided mode, which can also be excited by the light at any frequency, but when the single mode propagation condition can not be satisfied, some of the higher order hybrid guided modes will exist in the waveguide

    對于負單軸晶體，波導的主模是混合模hgm _ 0模，該模式同樣可被任何頻率的光波所激勵；當光波波長滿足一定條件時，波導內傳輸單模，否則，將激勵起高階混合模。
  2. The most achievement is that we firstly obtain the analytic accurate solution of the modal fields of the waveguide structure and find some available character : ( 1 ) the different uniaxial crystal materials have the different propagation properties ; ( 2 ) when the optical axis of the crystal is on the plane that is made up of the normal direction of the waveguide plane and the propagation, there are te mode and tm mode in this special waveguide, but the principal mode is different of the character of the uniaxial crystal, the principal mode is the principal mode of te mode for the negative uniaxial crystal, but the one of tm mode for the positive uniaxial crystal ; ( 3 ) when the crystal optical - axis parallel to the waveguide plane, for the positive uniaxial crystal material, the principal mode of the waveguide is a te wave, which can be excited by the light at any frequency ; when the light frequency satisfies a single mode propagation condition, there will be only the principal mode propagating in the waveguide, otherwise some of the higher order modes can be excited, which are neither te modes, nor tm modes, but the hybrid guided modes

    本文就是在此背景下，利用金屬波導和單軸晶體的一些特性，結合麥克斯韋方程組和波導的邊界條件，從三種不同的情況研究了光在對稱平面單軸晶體金屬波導（波導層是單軸晶體，兩個波導界面均為金屬）內的傳輸特性，其主要貢獻為，首次解析地得到了這種波導結構下模式場的精確解，並發現了一些有用的特性： （ 1 ）模式場的性質因單軸晶體的性質不同而異； （ 2 ）當單軸晶體光軸位於波導界面法方向與傳輸方向構成的平面內時，波導中傳輸te波和tm波，只不過其主模因單軸晶體的性質不同而異，當波導層介質為負單軸晶體時，波導主模是te波主模，而波導層介質為正單軸晶體時波導主模是tm波主模。 （ 3 ）當單軸晶體光軸位於波導面內時，對于正單軸晶體，波導的主模是橫電波te _ 0模，任何頻率的光波均可激勵該模式；當光波波長滿足一定條件時，波導內傳輸單模，否則，將激勵起高階模式，高階模即匪te波，也匪tm波，而是兩者耦合而成的混合模。
  3. The pulses can be broadening and become negatively chirped while propagating in anomalous dispersive media. in normal dispersive media, the pulses can be broadening, positively or negatively chirped, or even the dispersion - free propagation can be achieved, if the beam and material parameters are suitably chosen

    在負色散介質中傳輸時，脈沖會變寬、帶有負惆啾:而在正色散介質中傳輸時，脈沖會變寬、帶有正惆啾或負叨嗽，當光束和色散參數滿足一定條件時能實現「無衍射無色散」傳輸。
  4. The calculated results show that, for low energy protons ( energy less than several decade mev ), the contribution of proton nuclear reaction to energy deposition can be neglected ; while for high energy protons ( energy greater than several hundred mev ), the great difference appears for the above two cases. this gives us an indication that the contribution of proton nuclear reaction to the energy deposition must be concerned for high - energy protons. the propagation process in material of thermal shock wave induced by high - energy intense - current pulsed proton beam irradiation is calculated for several different proton energies

    對于入射能注量為418 （ j cm ~ 2 ）脈沖寬度為0 . 1 s的矩形脈沖強流質子束，計算結果表明，由於質子束能量不同，引起的初始熱激波（ 0 . 1 s時刻的熱激波）有單峰結構，也有雙峰結構，不同能量的強流質子束引起的熱激波在傳播的過程中都會出現明顯的彈性前驅波。
  5. This study adopts active detection technique based on lamb wave to monitor damage in composite materials. pzt ceramics with the diameter of 8mm are bonded on the surface of fiberglass - reinforced composite material acting as both actuators and sensors to generate and collect lamb waves. the waves emitted interact with discontinuities and experience a change in their propagation characteristics when damage is generated

    本文採用lamb波主動監測技術，利用粘貼在復合材料板表面的壓電元件，通過選擇恰當的激勵信號，激勵出可進行lamb波分析的主動監測信號，進而對監測信號進行分析及模式處理，初步實現了二維結構的損傷定位。
  6. By adjusting the chemical composition of a material, scientists can fine - tune its wave - propagation characteristics for a specific application

    科學家可以藉由調整材料的化學成份，精密調節該材料的電磁波傳遞特性，以符合特定的應用需求。
  7. Neural network method is applied to the strength prediction. the ratio of water to cement material, the mass of fly ash and the silicon fume are regarded as network inputs and th e 28d strength is the target. the inputs and target are used to train a three layers back - propagation network

    在神經網路應用中，以水膠比、膠凝材料用量和粉煤灰摻量作為輸入，以28d抗壓強度作為目標輸出，對一個三層bp網路進行了訓練，然後利用訓練后的網路對已知配比和28d抗壓強度的混凝土進行了強度預測。
  8. The results revealed that the fatigue degradation of the material includes three stages : micro - crack appearing at initial stage, a long process of crack propagation and fatigue. failure of the material after suffering the extraordinary degradation of stiffness

    結果表明，材料的疲勞衰變主要分為3個階段：產生小裂紋的初始階段；損傷累積擴張階段；材料剛度加速退化，疲勞破壞階段。
  9. The details are described as follows : 1. the photonic bandgap theory based on total internal reflection ( tir ) pcfs filled with by high index material ( nlc ) is proposed for the first time. based on this theory, the effects of nlc - filled tir - pcfs on the transmission mechanism and propagation properties are studied using plane - wave method and full - vector fem

    主要研究內容和成果包括以下基本方面: 1 、首次提出基於填充高折射率介質（液晶）的折射率引導型pcf的光子帶隙理論分析方法，在此理論的指導下，採用平面波展開法和有限單元法研究了填充對光纖傳導機制和傳輸特性的影響，研究結果表明液晶填充可以實現光子晶體光纖導光機制的轉變。
  10. Based on the requirement and target of the projects, firstly, pcf bragg grating are investigated theoretically and experimentally. moreover, the effects of filling high refractive index material ( nematic liquid crystal, nlc ) in pcfs on the transmission mechanism and propagation properties are studied by using plane - wave method and finite - element method ( fem ), farther, several novel pcfs are proposed and designed. lastly, we propose and demonstrate a clad - pumped er3 + / yb3 + - codoped fiber laser, which integrate all performances of broad - band tunable wavelength, uniform output power spectrum, high repeat frequency and high average power to together

    本論文選題于國家973 、 863以及國家自然科學基金等項目，結合課題的要求和主要目標，在對光子晶體光纖（ pcfs ）傳輸特性研究的基礎上，首先對光子晶體光纖光柵進行了理論和實驗研究;然後，採用平面波展開法和有限單元法分析了在光纖的空氣孔中填充高折射率液晶對光纖傳導機制和傳輸特性的影響，提出並設計了幾種新型光子晶體光纖;最後，提出並研製成功連續可調諧、輸出功率譜均衡的全光纖化、高功率包層泵浦鉺鐿共摻光纖激光器實驗樣機。
  11. Involve an export of material of the variety, allowing its propagation in a country which does not protect varieties of the plant genus or species to which the variety belongs, except when the exported material is for final consumption purposes

    涉及將品種的材料出口，準其在對該品種之同屬或同種的植物品種未予保護的國家繁殖者，但出口之材料若是作為最終消費目的者，不在此限。
  12. In this paper, through the statistical analysis of the random factors in the stage of sub - critical propagation of cracks, the statistical correlation equations between the two material coefficients are obtained and can be generalized. furthermore, it can be concluded that cracks propagation rate is influenced greatly by material coefficients in the condition considered in this study

    本文主要通過對亞臨界裂紋擴展階段各種隨機因素的統計分析，找到了可以推廣應用的，體現兩材料系數之間具有強負相關性的統計相關式，並驗證了在一定條件下，材料系數是影響裂紋擴展速率的主要因素。
  13. The spatial profile of the pulsed jn - beam remains jn - shape unchanged upon propagation, whereas its temporal profile depends on diffraction and the material ' s dispersion

    . 1習jjjlee | jjjj輸過程中保持j 。形狀不變，時間波形依賴于材料色散和衍射。
  14. It analyses what is the innovate and what is the consciousness of innovate reveals the status of the consciousness of innovate in the system of the activity of consciousness of innovate, demonstrates theoretical significance of study of the essence of consciousness of innovate and the form and the development of the consciousness of innovate ; it demonstrates that the consciousness of innovate is a kind of practical spirit in essence by the study of the value of consciousness of innovate, it can change into tremendous material strength and accelerate the development of science and technology and the progression of the society only if when it is understood and grasped by the people ; by the study of the social foster of the consciousness of bringing forth new ideas, it demonstrates a real route of society fostering the consciousness of innovate, that is, making great efforts to change the social environment, reinforcing the study and propagation of the theory of bringing forth new ideas is the important link to enhance the competence of bringing forth new ideas of a country

    其中，通過對創新意識的本質和創新意識的形成和發展的研究，辨析了什麼是創新，什麼是創新意識，揭示了創新意識在創新活動系統中的地位，指明了研究創新意識的理論意義；通過對創新意識價值的研究，指明創新意識本質上是一種實踐精神，只要它被人所理解和掌握，並通過改變人和環境，就能變成巨大的物質力量，最終促成科技發展和社會進步，進而明確了研究創新意識的實踐意義；通過對創新意識的社會培育問題的研究，指明了創新意識社會培育的現實路徑，既努力改變社會環境，加強創新理論的研究和宣傳是切實提高國家創新能力的重要環節。
  15. Taking in - situ toughened silicon nitride as a design object, principle component analysis ( pca ) is applied to study the microstructure and mechanical properties, to find out the main microstructure controlling factors, and to simplify the characterization variables and criterions ; fuzzy neural networks ( fnns ) is also applied to develop a design expert system for this material, which can realize the forward prediction from processing, microstructure to mechanical properties, and backward design from mechanical properties or microstructure to processing ; monte - carlo method is applied to simulate the grain growth of this material, and then crack propagation is simulated, which is another way based on physics and chemistry to developing prediction models from processing until to mechanical properties

    本文以自增韌氮化硅陶瓷為設計對象，運用主成分分析法（ principlecomponentanalysis ： pca ）對自增韌si _ 3n _ 4陶瓷的顯微結構和力學性能進行數據空間降維，獲得自增韌si _ 3n _ 4陶瓷顯微結構控制的主要因素，進而簡化了表徵參量變量和準則；運用模糊神經網路（ fuzzyneuralnetworks ： fnn ）建立了自增韌si _ 3n _ 4陶瓷設計專家系統，能實現工藝?微結構?性能的正向預測及反向設計；運用monte - carlo方法（ mc ）進行自增韌si _ 3n _ 4陶瓷的晶體生長模擬，然後進行裂紋擴展模擬，探索建立工藝?微結構?力學性能預測模型的思路。
  16. Wave propagation and energy transportation along cylindrical piezoelectric - piezomagnetic material

    圓柱狀壓電壓磁復合材料中波的傳播和能量輸送
  17. It is very important to study the correlation of cyclical strain on the side of hole with fatigue life cycle for understanding the material damage and micro - crack initiation, and for preventing macro - crack initiation and propagation

    研究孔邊循環應變與疲勞循環次數的相關性，對于研究材料損傷及微裂紋的產生，預防宏觀裂紋的產生及擴展具有十分重要的意義。
  18. Take the fast transient mass transfer of nacl solution within solid porous material for granted, experiments on mass transfer were done in order to explore the macro physical behavior under the condition of suddenly contact of nacl solution and porous material. base on the experimental results, the physical behavior and mechanism of mass transfer of nacl solution within porous material were analyzed and discussed. the results indicate that under the condition of suddenly contact, the mass transfer of nacl solution in porous material has apparent wave propagation mechanism

    以nacl溶液在固體多孔材料中的快速瞬態傳質為例，對nacl溶液和固體多孔狀材料突然接觸情況下， nacl溶液在固體多孔狀材料中的質量傳遞過程所表現出來的宏觀物理行為進行了實驗研究，根據實驗結果，對液體nacl哈爾濱工程大學博士論文一溶液在多孔狀材料中質量傳遞的物理行為和機制進行了分析和討論。
  19. The propagation material shall be confiscated

    繁殖材料應予沒收。
  20. The young plant propagation agreement, entitles the licencee - at his own or designated premises - to propagate the variety ( - ies ), comprised by the agreement and to sell the propagation material to third party nurseries, provided such third party nurseries have signed or will sign an appropriate licence agreement, provided their intended use of the plant material

    植物幼苗繁殖合約可讓被授權人在他的土定或者他指定的地點，在合約的范圍內繁殖各類品種，並且得以將繁殖材料出售給另一家苗圃商；不過該另一家苗圃商也要，或者將要簽署一份恰當的授權合約，裏面陳述該苗圃商如何使用該植物材料。
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