encrustations

英

美

n.  (长时间形成的)外皮，外壳，沉积物
encrustation的复数

柯林斯词典

• (长时间形成的)外皮，外壳，沉积物
  Anencrustationis a hard and thick layer on the surface of something that has built up over a long period of time.

双语例句

• Infrared spectroscopy analysis of double J ureteral stent encrustations is a reliable method of predicting stone composition when the stone cannot be retrieved.
  当不能得到原发结石标本时，双J管结壳的红外线光谱分析不失为一种能预测结石成分的可靠方法。