A technical concept, "reverse source quantity", based on artificial neural network, has been pointed out in order to carry out a numerical dynamic simulation on hydrocarbon diffusion process.
前言：提出实现烃类重气泄散态势的动态过程数值预测新构想———基于人工神经网络的“反求源”技术。
Through a great deal of experiments, the durability of HPC with artificial sand are studied systematically. Impermeability, freezing resistance and chloride ion diffusion are tested.
通过大量试验，系统研究了人工砂高性能混凝土的耐久性，对抗渗性、抗冻性、氯离子扩散系数等项目进行了测试。
Through a great deal of experiments, the durability of HPC with artificial sand are studied systematically. Impermeability, freezing resistance and chloride ion diffusion are tested.
通过大量试验，系统研究了人工砂高性能混凝土的耐久性，对抗渗性、抗冻性、氯离子扩散系数等项目进行了测试。
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