常見(jiàn)例句A method for direct determination of cerium dioxide content is studied.介紹了一種直接測(cè)定氧化鈰含量的新方法。The bottom layer incorporates two other common catalysts, cerium oxide and platinum.下層則包含氧化鈰和鉑兩種常見(jiàn)的觸媒。 返回 cerium-oxides