In the first place, even in what is called the production of material objects, it must be remembered that what is produced is not the matter composing them.
首先，即令在所谓物质实体的生产方面，也必须记住，所生产的并非是组成物质实体的物质。
The production preparation of cementation material is one of important composing parts of the 211 project "paste-filling material and filling technology experiment system".
胶凝材料生产制备是国家211工程项目“充填注浆材料及技术实验系统”的重要组成部分。
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