常見例句Keywords Flame-retardant agent,Polyurethane coating,Carbonific,Intumescent,Flame-retardant mechanism.; 阻燃劑;聚氨酯塗料;成炭劑;膨脹型;阻燃機理;Carbonif Carboniferous 石炭紀、石炭層,含碳或煤的 返回 carbonific