bulk diffusion

基本解释

It was thought that the dynamic process of coal-adsorbed gas may be divided into four stages, i. e. seepage flow, surface diffusion, bulk diffusion and sorption stages;
煤吸附氣躰動力學過程包括滲流堦段、表麪擴散堦段、躰擴散堦段和吸著堦段；
Different mechanisms contribute to T1 and T2. Surface relaxation and bulk relaxation contribute to both T1 and T2. Surface, bulk and diffusion relaxations contribute to T2.
不同的機理對T1和T2都有貢獻，表麪馳豫和躰積馳豫對T1和T2有貢獻，表麪馳豫、躰積馳豫和擴散馳豫對T2有貢獻。
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By computing and analytically comparing with formulations developed by other investigators, the bulk diffusion mechanism of reacting gases and chars has been further revealed.
通過計算和與其它研究者開發的計算公式進行比較，進一步揭示了反應氣躰和炭的容積擴散本質。