例句與造句

1. Factor contributing to this problem is that the metal cobalt used as the cementing phase easily causes diffusion and dissolution of carbon , promotes graphite growth and inhibits diamond nucleation and growth in the course of competitive growth between diamond and graphitic carbon
   其原因是在沉積過程中，基體中所含的鈷會引起碳的溶解和擴散，從而導致金剛石成核密度的降低和石墨的形成。
2. It's difficult to find graphitic carbon in a sentence. 用graphitic carbon造句挺難的