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我校前因缺乏教具,曾用硬紙盒製造了合成法製氨工業流程等模型教具若干种。这些教具相当耐用,它可以解决一些設备較差的学校在教学上的困难,並將節約一定的經費。今將有關製造这類模型的點滴經驗介紹於此,籍供参考。一、製造用的材料和製造方法 (1)硬紙盒我製模型的主要材料是硬紙盒。如
Due to the lack of teaching aids in front of our school, we used cartons to make a number of model teaching aids such as industrial ammonia synthesis processes. These teaching aids are very durable. They can solve the teaching difficulties of some poorly equipped schools and will save a certain amount of money. This bit of experience in the manufacture of such models will be introduced here, for reference. First, the manufacturing materials and manufacturing methods (1) carton I made the model is the main material is a cardboard box. Such as