- multigrain structure
- 多: many; much; more
- 结构: structure; composition; cons ...
- 斑粒结构: porphyrogranulitic texture
- 不等粒结构: anisomerous texture; inequigranular texture
- 粗粒结构: coarse grained texture; coarse granular texture; coarse texture; coarsegrainedtexture
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