... fluorescent lamp,explosion-proof floodlight,annular fluorescent lamp. Explosion-proof annular fluorescent lamp,explosion-proof floodlight,annular fluorescent lamp.Detailed ... , 2 area. 2).explosive property gas compound: II A, II B, II C.3).the temperature distinguishesfrom set: T1 ~ T3 ... .4).sign preventing explosion: Exd II BT3, * Exd II CT3, * Exde II CT3.Give exegesis or explanation:The request ...