This standard specifies the general technical requirements, test methods and inspection rules for dissolved oxygen meters using me

This standard specifies the model designation, basic parameters, technical requirements, test methods, inspection rules, marking,

This standard specifies the hull lines of FRP fishing boats and their application, the representation method of section drawings,

This standard specifies the structural type and connection method and technical requirements of each connection node of glass fish

This standard specifies the main technical parameters, technical requirements, test methods, inspection rules, marking, packaging

This standard gives the main morphological and structural characteristics, growth and reproduction, genetic characteristics, and d

This standard provides the main biological characteristics, growth and reproduction, molecular biological characteristics, cytogen

This standard provides the main biological characteristics, growth and reproduction, genetic characteristics and detection methods