单词	semi-friable alumina
释义	semi-friable alumina 高氧化铝磨料
随便看	digital telephone system digital telephone transmitting system digital telephony digital telephony act digital telephony platform digital television digital television action plan digital television additional services digital television broadcast digital television broadcasting digital television camera digital television centre digital television communications digital television converter digital television display system Digital Television Element digital television encoder digital television fundamental digital television in railway digital-television lottery digital television monitor digital television picture digital television platform digital television principles digital televi-sion principles