Acoustic wave conduction and radiation characteristics of closed-pore foam board and acoustic wave radiator manufactured according to characteristics or utilization of characteristics in active noise reduction
CN102149037A
Digital loudspeaker
CN102249042A
Method for manufacturing concave-convex rod rectangular environment-friendly bushing plate
CN102240133A
Method for manufacturing rough blank of attapulgite environment-friendly teacup jacket
CN102173672A
Attapulgite ceramic mud with air purifying function
CN102173743A
Attapulgite argil powder with air purifying function
CN102606342A
Metal/water/air reaction feedback type engine and high-speed sea flitting aircraft with diving function
CN101973733A
Production method of purple attapulgite soft ceramic clay
CN101973064A
Method for producing green attapulgite polymer clay
