zero voltage zero current switching
chrome free and formaldehyde free tannage
lead free and cadmium free
Arid region and semiarid region
Bachu Region of Xin jiang Autonomous Region
Electric power transmission from western region to eastern region
zero distance connection
zero capital of operating
2+1-dimensional zero curvature equation
A new phase locking method with zero crossing
a type function of zero order
a zero dead pixel policy
Absolute Zero Grating Bar