频谱分析仪通用规范
General specification for spectrum analyzer
General specification for spectrum analyzer
General specification for radio altimeters
Information technology-Requirements and test method of the Chinese ideograms font
Test method for total organic carbon in electronic grade water
Test method for SiO2 in electronicngrade water by spectrophotometer
Test method for particles in electronic grade water by instrument
Hollow metallic waveguidesnPart 6:Relevant specifications for medium flat rectangulare waveguides
Generie rules for test methods of electronic grade water
Fanges for waveguidesnPart 7: Relevant specification for flanges for square waveguides
Test method for trace anion in electronic grade water by ion chromatography