angular grain 예문

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1. It is composed mainly of rounded grains but sub-angular grains also occur.
2. Spherical grains tend to migrate to the surface more than do angular grains.
3. The basal conglomerates are made up of hard sandstone which contains angular grains.
4. They wear faster and cut slower, but their angular grains shear through steel for a finer finish with less heat.
5. The conglomerate is typically a medium to fine grained brown to buff sandstone consisting of angular to sub angular grains with scattered flakes of mica; it makes a good building stone.