| 单词 | crystal |
| 释义 | crystal A solid with a regular polyhedral shape. All crystals of the same substance grow so that they have the same angles between their faces. However, they may not have the same external appearance because different faces can grow at different rates, depending on the conditions. The external form of the crystal is referred to as the crystal habit . The atoms, ions, or molecules forming the crystal have a regular arrangement and this is the crystal structure |
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