diffusion n. 1.散布,發(fā)散。 2.傳播,普及。 3.冗長。 4.【化學】滲濾。 5.【物理學】擴散,漫射。 the diffusion of knowledge 知識的傳播。 diffusion of speech 演說的冗長。 diffusion of light 光線的漫射。
An experimental research on oxygen - enriched air methane counterflow diffusion flame 甲烷對向流擴散火焰的實驗研究
Chemical kinetical modeling of turbulent jet diffusion flame for methane air 空氣湍流射流擴散火焰的化學動力學模擬
Tests on electric and optical fibre cables under fire conditions - tests for vertical flame propagation for a single small insulated wire or cable - procedure for diffusion flame 著火條件下電纜和光纜的試驗.單股絕緣電線或電纜的垂直火焰蔓延的試驗.擴散火焰法
Tests on electric and optical fibre cables under fire conditions - part 2 - 2 : test for vertical flame propagation for a single small insulated wire or cable - procedure for diffusion flame 著火條件下電纜和光纜的試驗.第2 - 2部分:單根小型絕緣電線或電纜的垂直火焰蔓延試驗.擴散火焰規(guī)程
Tests on electric and optical fibre cables under fire conditions - part 2 - 2 : test for vertical flame propagation for a single small insulated wire or cable - procedure for diffusion flame 著火條件下電纜和光纜的試驗.第2 - 2部分:單根小型絕緣電線或電纜的垂直火焰蔓延試驗.擴散火焰規(guī)程
Chapter five introduces the detail technics process of synthesis of carbon nanotubes by using liquid - hydrocarbon diffusion flame . chapter six discusses and analyzes the effects of every technics paramenters on the nanotubes produced by using liquid - hydrocarbon diffusion flame . chapter seven analyzes the sem and tem micro - appearances of the nanotubes produced by liquid - hydrocarbon diffusion flame and draws the conclusion of the nanotubes " cluster growth mechanism . chapter eight analyzes the sem and tem micro - appearances of the nanofibes produced by liquid - hydrocarbon diffusion flame , and considers that the growth mechanism of nanotubes and nanofibers is different 第六章討論和分析了液態(tài)碳氫化合物燃料擴散火焰法制備碳納米管時具體各項工藝參數(shù)的影響。第七章分析了擴散火焰法制備碳納米管的sem形貌和tem形貌,歸納出碳納米管團簇生長的規(guī)律。第八章對六種基板材料在擴散火焰中制備出的碳納米纖維的sem形貌和tem形貌作了分析討論,認為擴散火焰法制備碳納米管和碳納米纖維的形成機理不同。
Abstract : a numerical model and experiments over pmma are used to evaluate the main assumptions used in the theoretical description of a diffusion flame established in a natural boundary layer . flow characteristics ( 2 - d boundary layer ) and surface thermal balance are identified as the critical assumptions to be evaluated . comparison of experiments , numerical results , and theoretical model serve to validate the assumptions leading to the definition of a mass transfer number but establish the need to model all three - dimensional features of the flow 文摘:對pmma進行數(shù)字模擬和試驗,對描述自然邊界層擴散火焰理論的假設(shè)進行評價.我們把流動特性(二維邊界層)和表面熱平衡作為評價的關(guān)鍵假設(shè).試驗、數(shù)字模擬和理論模型證實了對質(zhì)量傳遞數(shù)值定義的假設(shè)是正確的,但研究也表明,有必要對流動特性進行三維模擬
百科解釋
In combustion, a diffusion flame is a flame in which the oxidizer combines with the fuel by diffusion. As a result, the flame speed is limited by the rate of diffusion.