News
- 13.05.2019 ISO/TS 19807-2 "Nanotechnologies -- Magnetic nanomaterials -- Part 2: Specification of characteristics and measurements for nanostructured superparamagnetic beads for nucleic acid extraction
- 01.12.2016 Industrie 4.0: Deutsch-Chinesische Zusammenarbeit nimmt Fahrt auf
- 15.11.2016 Deutsch-chinesisches Seminar in Chengdu
Links
- BAM - Bundesanstalt für Materialforschung und -prüfung
- DIN Media - DIN Media GmbH
- BMWK - Bundesministerium für Wirtschaft und Klimschutz
- DIN - Deutsches Institut für Normung
- PTB - Physikalisch-Technische Bundesanstalt
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GB/T 44895-2024
Market and social research—Guidelines for the questionnaire development
GB/T 42487-2023
土壤质量 土壤硝态氮、亚硝态氮和铵态氮的测定 氯化钾溶液浸提流动分析法
Soil quality—Determination of nitrate, nitrite and ammonium in soils—Extraction with potassium chloride solution and determination using automated method with segmented flow analysis
GB/T 42488-2023
土壤质量 土壤中无机态氮15N丰度的测定 稳定同位素比值质谱法
Soil quality—Determination of nitrogen-15 abundance of inorganic nitrogen in soil—Stable isotope ratio mass spectrometry
GB/T 42490-2023
土壤质量 土壤与生物样品中有机碳含量与碳同位素比值、全氮含量与氮同位素比值的测定 稳定同位素比值质谱法
Soil quality—Determination of total content and isotope ratio of organic carbon and nitrogen of soil and biological samples—Stable isotope ratio mass spectrometry
GB/T 18024.1-2024
Graphical symbols for the technical documentation of coal mine machinery—Part 1:General principles