[国外标准] BS 7461-1991 Specification for electrically operated automatic gas shut-off valves fitted with throu
[国家标准] GB/T 7461-1987 肥皂中不皂化物和未皂化物的测定
[机械行业标准] JB/T 7461-1994 实验室仪器产品检验规则