nucleation theory 中文意思是什麼

nucleation theory 解釋
成核理論
  • nucleation : n. 【物、化】成核（現象）；晶核過程，核子作用；集結；人工降雨作用。
  • theory : n. 1. 理論，學理，原理。2. 學說，論說 （opp. hypothesis）。3. 推測，揣度。4. 〈口語〉見解，意見。
  1. The main evidence for the validity of nucleation theory rests on its ability to predict closely the critical supersaturation for most liquids in cloud chamber experiments.

    成核理論正確性的主要證據在於它能在雲室實驗中精密地預測多數液體的臨界過飽和度。
  2. In the paper, the effect of ion bombarding on nucleation of diamond by negative substrate bias - enhanced was investigated in theory, and some experimental phenomena were explained

    摘要從理論上研究了負襯底偏壓增強離子轟擊對金剛石核化的影響，並用理論解釋了一些實驗現象。
  3. The ultrasonic quenching of medium carbon alloy high strength steel 35crmnsi was conducted, using h66025t ultrasonic generator. the result showed the mertensite lath was fined obviously and the nucleation rate was improved. it proved the theory that the propagation of elastic wave in austenite can promote the nucleation of martensitic transformation

    採用h66025t超聲波發生儀，對中碳合金高強度鋼35crmnsi進行超聲波淬火，發現馬氏體板條明顯細化，提高了馬氏體相變形核率，證實了彈性波在奧氏體中傳播促進馬氏體相變形核理論。
  4. In this paper, based on my experiments, the mechanism of pneumatic defrosting of air cooler was studied through the application of thermodynamics, heat and mass transfer, classical theory of nucleation, boundary - layer theory, the theory on gas dynamics

    本文在對氣動除霜進行了實驗研究的基礎之上，應用工程熱力學、傳熱傳質學、晶體成核理論、邊界層理論、氣體動力學等有關知識，從系統的觀點出發，探討了氣動除霜的機理。
  5. Using the microwave selective heating property for materials, by setup equivalent equation, and first time inducing the electromagnetic field perturbation theory to the design of heating materials for substrate in mpcvd, three temperature distribution modes were established, including temperature distribution comprehensive mode of inhomogeneous plasma, temperature distribution composite mode of composite substrate materials, temperature distribution perturbation mode of composite materials, which ii provided an whole new technology route to the design of substrate heating system in mpcvd and guided the preparation of heating materials for substrate. and then the heating materials for substrate were designed and optimized to obtain large area homogeneous temperature distribution even larger than substrate holder ' s diameter. as an important part, this thesis researched the nucleation and growth of diamond films in mpcvd, systematically researched the effects of substrate pretreatment, methane concentration, deposition pressure and substrate temperature etc experimental technologic parameters on diamond films " quality on ( 100 ) single crystal silicon substrate in the process of mpcvd, characterized the films qualities in laser raman spectra ( raman ), x - ray diffraction ( xrd ), scanning electron microscopy ( sem ), infrared transmission spectra ( ir ), atomic force microscopy ( afm ), determined the optimum parameters for mpcvd high quality diamond in the mpcvd - 4 mode system

    該系統可通過沉積參數的精確控制，以控制沉積過程，減少金剛石膜生長過程中的缺陷，並採用光纖光譜儀檢測分析等離子體的可見光光譜以監測微波等離體化學氣相沉積過程；利用微波對材料的選擇加熱特性，通過構造等效方程，並首次將電磁場攝動理論引入到mpcvd的基片加熱材料的設計中，建立了非均勻等離子體溫度場綜合模型、復合介質基片材料的復合溫度場模型及復合介質材料溫度場攝動模型，為mpcvd的基片加熱系統設計提供了一條全新的技術路線以指導基片加熱材料的制備，並對基片加熱材料進行了設計和優選，以獲取大面積均勻的溫度場區，甚至獲得大於基片臺尺寸的均勻溫度區；作為研究重點之一，開展了微波等離體化學氣相沉積金剛石的成核與生長研究，系統地研究了在（ 100 ）單晶硅基片上mpcvd沉積金剛石膜的實驗過程中，基片預處理、甲烷濃度、沉積氣壓、基體溫度等不同實驗工藝參數對金剛石薄膜質量的影響，分別用raman光譜、 x射線衍射（ xrd ） 、掃描電鏡（ sem ） 、紅外透射光譜（ ir ） 、原子力顯微鏡（ afm ）對薄膜進行了表徵，確立了該系統上mpcvd金剛石膜的最佳的實驗工藝參數。
  6. The study on the structure and micromorphology of two znse monocrystal indicated that the growth mechanism of znse monocrystal via vapor is two - dimension nucleation and growth, and ( 111 ) face is the mainly appearing face. the results provide an important experimental evidence for the growth theory of singular face. ultrafast nonlinear optical properties of as - grown znse single crystals were investigated by femtosecond pulses

    兩種方法生長znse體單晶的結構和形貌研究表明，在輸運劑zn伽場） 3c15的存在和本文實驗條件下， cvt氣相生長znse的機理主要為二維成核與生長機理， （ 111 ）面為主要生長晶面，該結果為立方晶體的奇異面生長理論提供了重要的實驗證據。
  7. In this paper, the nucleation process of diamond by filament cvd was analyzed, and enhanced flux of ions by negative substrate bias was investigated in theory

    摘要木文對熱燈絲cvd沉積金剛石膜的核化過程進行了分析，從理論上研究了負襯底偏壓增強活性離子的流量。
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