The famous medical text Compendium of Materia Medica records more than 200 medicinal substances, and Crystal is one of them. Because of its piezoelectricity, a crystal releases a kind of light when it is under pressure. Classified by color, there are many different kinds of crystal. The color of crystal can be changed in the lab.

著名的醫學文本《本草綱目》記載著超過200藥用物質,水晶就是其中之一I1C8Rovb5uD)X;O8。由于其壓電性質,當受壓時，水晶會釋放一種光CY%1pQP,%j-78DO8。這種物質按照顏色分類,有許多不同種類的晶體WZk8[pCuefr#n[l3Vmsr。水晶的顏色可以在實驗室里改變qcakjhY*pUK5=S-kaoy。

詞語解釋：

1. Compendium of Materia Medica 《本草綱目》
2. substance n. 物質
3. piezoelectricity n. 壓電