| 摘要 |
The method of displaying chemical growths and employing structure having a first portion to contact a solution capable of forming the growths when the solution is dried, the structure also having an intermediate portion to feed the solution by wicking action from the first portion, and the structure also having a display portion to which the solution is fed from the intermediate portion and on which the growths form when the solution is fed thereto and dried, the improvement that includes modifying at least one of the portions to control the feeding of the solution.
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