An experimental study has been carried out on the doping of polysilicon by ion implantation and diffusion for the preparation of shallow junctions.
本文对多晶硅膜离子注入掺杂和扩散掺杂制备浅发射结进行了实验研究。
There are the phreatic flow which shallow cycles and fissured diffusion flow deeply cycling, both are effected more or less by the reservoir water existed in the water-bearing block of limestone.
石灰岩含水体中存在着受库水影响较大的浅循环潜水流和深循环裂隙扩散流。
Based on the Finite Volume Methods (FVM), model system is developed to solve the 2d shallow water equation and convection-diffusion equation.
以有限体积法为核心，建立了求解二维浅水方程和对流扩散方程的模型体系。
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