not containing or resembling or characteristic of a metal;
"nonmetallic elements"
例句
用作形容词 (adj.)
A great effort is made to keep porosity, segregation, impurities, and nonmetallic inclusions to as low a level as possible. 为了保证气孔,偏析,杂事及非金属的含量在尽量低的水平,做了大量的努力。