短語(yǔ)詞組短語(yǔ)covering for fire protection 防火保護(hù)層Covering g Fire 掩護(hù)射擊give covering fire 火力支援covering fire detail 掩護(hù)火力fire covering 掩護(hù)射擊fire prevention covering 阻火罩fire resisting covering 防火塗層厚度 返回 covering fire