Global economic recession
global system for mobile communication
全域移动通信系统
全球移动通讯系统
全球移动通信系统
移动通讯
泛欧行动电话系统
泛欧数字式行动电话系统
global system for mobile communication GSM
全球移动通信系统GSM
全球移动通信系统
全球行动通讯系统
global system for mobile communication system
global system technology GST
GSM global system for mobile communications
a reform of economic system
agricultural eco economic system
agricultural economic system
Agro-ecosystem and economic system
agro-forestry ecological and economic system
Coastal and land economic system
Eco-agriculture economic system
ecological and economic system of agriculture
ecological economic system
ecology economic system