JT/T 18-1998 Requirement and procedure for working out or revising standard of transportation trade....
JT交通运输标准
JT交通运输标准
JT交通运输标准
JT/T 18-2020 交通运输标准制定、修订程序和要求
JT/T 18-2020 Procedure and requirement for development or revision of transportation standards. 1范围 ...