microstructures of materials造句

例句与造句

1. There can be infinite variability of the microstructures of materials, but they can be broken down into four basic compositional categories, with a few subgroups : composition category 1  glass-based systems ( mainly silica ), composition category 2  glass-based systems ( mainly silica ) with fillers, usually crystalline ( typically leucite or, more recently, lithium disilicate ), composition category 3  crystalline-based systems with glass fillers ( mainly alumina ) andcomposition category 4  polycrystalline solids ( alumina and zirconia ).
2. It's difficult to find microstructures of materials in a sentence. 用microstructures of materials造句挺难的