pearl nacre

• 珍珠层

pearl nacre的用法和样例：

例句

1. The unusual exothermal transformation of nacre aragonite to calcite is perhaps resulted from the stored excess enthalpy in nanometer-size aragonite of nacre.
   珍珠层文石这种异常的热相变特征可能是由纳米级文石储存的过剩焓引起的。