diffusion boundary layer

基本解釋

This impervious layer or boundary will retard the free diffusion of moisture. This condition is referred to as case hardening.
這一不透氣的殼層(或邊界層)會阻滯水分自由擴散，這種情形稱為表面硬化。
Therefore, in the convective boundary layer the variation of vertical diffusion coefficients obtained from the Doppler acoustic radar can express the diffusion process well.
用聲雷達測量的垂直擴散系數(shù)能夠較好地反映對流邊界層中的擴散過程。
The diffusion recovery due to the boundary layer suction and the separation of passage vortex are two main factors for the selection of the optimal suction location and suction flow rate.
吸氣導致的柵內擴壓能力恢復和通道渦三維分離效應是確定最佳吸氣位置及吸氣量的判定原則。