Apparatus for microdetermination of alkoxyl groups 烷氧基团微量测定用仪器
2.
Apparatus for microdetermination of nitrogen by kjeldahl method 用基耶达法进行氮气微量测定用仪器
3.
Standard specification for apparatus for microdetermination of carbon and hydrogen in organic and organo - metallic compounds 微量测量有机及有机金属化合物中碳和氢含量用仪器的标准规范