GB/T 9966.3-2020
Test methods for natural stone--Part 3: Determination of water absorption, bulK density, true density and true porosity 天然石材试验方法 第3部分:吸水率、体积密度、真密度、真气孔率试验 |
GB/T 38531-2020
Microbeam analysis—Computed tomography (CT) method for micro- and nano-pore structure analysis in tight rocK samples 微束分析 致密岩石微纳米级孔隙结构计算机层析成像(CT)分析方法 |
YY/T 1754.2-2020
Preclinical animal studies of medical devices Part 2: Rat sKin defect model of induced diabetes 医疗器械临床前动物研究 第2部分:诱导糖尿病大鼠皮肤缺损模型 |
GB 4789.29-2020
National food safety standard - Microbiological examination of food hygiene - Examination of BurKholderia gladioli (Pseudomonas cocovenenans subsp.farino) 食品安全国家标准 食品微生物学检验 唐菖蒲伯克霍尔德氏菌(椰毒假单胞菌酵米面亚种)检验 |
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