The solid fuel pellet (a ceramic oxidematrix) is the first barrier that retains many of the radioactive fission products produced by the fission process.
固体的燃料弹（陶式氧化物母体）是第一道防护，隔开裂变过程中产生的裂变放射。
2
OBJECTIVE To develop oral mucosal ointment of organic silicon oxide and evaluate its matrix.
目的研制有机硅氧化物类口腔黏膜药膏及对其基质进行评价。
3
With the increase of copper oxide content in silver matrix, the density and the electric conductivity of AgCuO materials tended to decrease.