AS 10303.12-1999 工业自动化系统和集成 产品数据表述和交换 描述方法:EXPRESS-I语言参考手册
Industrial automation systems and integration - Product data representation and exchange - Description methods: The EXPRESS-I language reference manual
Specifies elements of the EXPRESS-I language. This language is a formal data representation and abstract test case specification which can be used to exemplify the information requirements of other Parts of AS 10303 and is a companion to the EXPRESS and