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- It introduces the method of preparation,research of performance and calculation of uncertainty of mixed gas reference material of tetrafluoromethane,nitrous oxide and hexafluoride in helium. 论述了氦中四氟甲烷、氧化亚氮和六氟化硫混合气体标准物质的制备方法、性能考察、不确定度计算,经与国内外同类标准物质比较,证明量值准确可靠、方法可行。
- gas reference material of carbon dioxide in air 空气中二氧化碳标准气体
- Keywords Xe and SF6 in He;gas reference material;preparation; 氩中氙;甲烷;气体标准物质;研制;
- gas reference materials 气体标准物质
- Reference materials are ready to hand. 参考资料就在手边。
- Test materials and reference materials of quality research. 质量研究工作的试验资料及文献资料。
- Three elements in the reference materials of Sn-alloy were analyzed by ED-XRF. 本文提出X荧光能谱法测定锡基合金中三个元素含量的方法。
- gas reference material 气体标准物质
- The CD-ROM is easy to use as a reference material. 本光碟是容易使用的参考资料。
- They also recommended related reference material. 他们还推荐了有关的参考资料。
- I need reference material for my paper. 我写论文需要一些参考资料。
- The agency also developed writing aids and reference materials such as guidebooks on official Chinese writing. 此外,该署亦编制写作辅助工具和参考材料,例如出版政府公文写作手册。
- We spent days going through all related reference material. 我们花了好多天功夫查阅所有有关的参考资料。
- To facilitate learning, a resource room with rich reference materials is open for students to use. 为了帮助学员学习,学院设有学习资源中心,备有多种与课程相关的书籍及参考资料,供学员自习使用。
- The content of bornyl acetate in reference material was measured by gas chromatographic area normalization. 乙酸龙脑酯标准样品的多实验室联合定值结果表示为:乙酸龙脑酯含量的标准值99.;93%25;
- Civic education reference materials produced during the year included handbooks for parents, newsletters for young school children and a 2002 calendar on good citizenship. 委员会还制作了各类公民教育参考资料,包括家长手册、儿童杂志、以良好公民素质为题的年历等。
- Provides reference material for XSLT elements and functions. 提供XSLT元素和函数的参考资料。
- Five elements in the reference materials of the alloy steels were analyzed by EDXRF. 本方法采用能谱仪中定量分析软件,选择适当工作条件,测定合金结构钢中五个元素。
- Article 2 The fuel gas referred to in these Regulations means the gas fuel such as artificial coal gas, natural gas, and liquefied petroleum gas (hereinafter called LPG. 第二条本条例所称燃气,是指人工煤气、天然气、液化石油气(以下简称液化气)等气体燃料。
- The sales volume of reference material for teaching is the largest. 教参销售量最大。