GB/T 24105-2009 Basic conditions and methods of environmental test for geotechnical engineering instrument

GB/T 2421-1999 Environmental testing for electric and electronic products—Part 1:General and guidance GB/T 2421-2020 Environmental testing—General and guidance GB/T 2421.1-2008 Environmental testing for electric and electronic products—General and guidance GB/T 2421.2-2008 Environmental testing for electric and electronic products—Information for specification writers—Test summaries GB/T 2422-1995 Environmental testing for electric and electronic products—Terms and definitions GB/T 2422-2012 Environmental testing—Guide to drafting of test methods—Terms and definitions GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 4796-2001 Classification of environmental parameters and their severities of electric and electronic products GB/T 4796-2008 Classification of environmental conditions of electric and electronic products—Part 1:Environmental parameters and their severities GB/T 4796-2017 Classification of environmental conditions—Environmental parameters and their severities