美利体育登录入口官网:DIN EN ISO 20843 E:2010-10 草案 石油和相关产品 HFAE、HFAS 和 HFC 类耐火流体 pH 值的测定 (ISO/FDIS 20843:2010)
Draft Document - Petroleum and related products - Determination of pH of fire-resistant fluids within categories HFAE, HFAS and HFC (ISO/FDIS 20843:2010); German version FprEN ISO 20843:2010