magnesite brick什么意思
镁砖
danci.911cha.com
1. 镁砖：magnesite-chrome brick 镁铬砖 | magnesite brick 镁砖 | magnesite 菱铁矿
2. 镁砖,苦土砖：菱镁石;苦土 magnesite | 镁砖;苦土砖 magnesite brick | 磁力造模法 magnet molding process