302-A 脱红光专用活性炭
302-A special active carbon for removing red-lustre
35kV专用输电线
35kV appropriative power transmission line
IC专用设备产业
IC Production Equipment Industry
IP虚拟专用网
IP-virtual private network
IP专用承载网
IP special supporting network
JH电瓷专用水泥胶合剂
JH special cement for insulator