column crystal 예문

예문

1. The halo is formed by sunlight entering horizontally-oriented, flat, Parry oriented column crystals may also produce the arc, although this is rare.
2. The mechanism by which column crystals adopt this special Parry orientation has been subject to much speculation  recent laboratory experiments have shown that it is the presence of crystals with a scalene hexagonal cross-section which are likely to be the cause.