苯气体标准物质
benzene gas standard material
二氧化碳气体标准物质
Carbon dioxide gas standard material
二氧化碳中氧气体标准物质
oxygen in carbon dioxide gas reference materials
甲烷气体标准物质
methane gas standard material
一氧化碳气体标准物质
carbon monoxide gas standard material
乙醇气体标准物质
ethanol gas certified reference material
标志气体指标体系
index system of remarkable gas
自然(污染)基体标准样品
Natural(contaminated) matrix standard
液体标准源
Liquid standard radioactive source
体标准源
Voluminal standard radioactive source
手动返回单向标准体积管
manual-return unidirectional prover
视窗开放标准体系结构
WOSA Windows Open Standard Architecture
身高标准体重法
Weight-for-height standard