根据电工部各企业就家用电器质量的综合艺术一结构规划问题,设计出了一套标志控制机构功能的指令符号。这套设计方案曾对各个方面,譬如从抽象的符号到完全现实的描绘作了探索。抽象的符号是一种以图式的常数和变数的结合为基础的严紧而简练的系统,但要求经过预先的训练才能掌握。描绘现实的符号则 According to the Ministry of Electrical Industry enterprises on the quality of integrated household appliances a structural planning issues, designed a set of signs control agency functions command symbols. This design has been to explore all aspects, such as from abstract symbols to a completely realistic depiction. Abstract notation is a tight and concise system based on a combination of schemata constants and variables, but requires pre-training to be mastered. The symbol of reality is