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出典:Wikipedia
出典:『Wikipedia』 (2011/05/22 18:52 UTC 版)
Conchoidal fracture describes the way that brittle materials break when they do not follow any natural planes of separation. Materials that break in this way include flint and other fine-grained minerals, as well as most amorphous solids, such as obsidian and other types of glass.
conchoidal fracture