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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 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。
- 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。
- 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;
- Provides reference material for XSLT elements and functions. 提供XSLT元素和函数的参考资料。
- The sales volume of reference material for teaching is the largest. 教参销售量最大。
- gas reference materials 气体标准物质
- Reference materials are ready to hand. 参考资料就在手边。
- I want to choose some books and reference material for my research work. 我想为我的研究工作选一些书和参考资料。
- This Standard Reference Material is intended for use in the measurement of the oxygen gas transmission rate of thin polymeric films using manometric, volumetric, or coulometric methods. (渗透量是以下待测值的函数:1.;压力的升高率2
- Test materials and reference materials of quality research. 质量研究工作的试验资料及文献资料。
- 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。
- CD disks can store huge volumes of data and are very useful for reference material an encyclopedia,for example. cd盘可以储存大量数据,这对于文献资料的存储非常有用,如存储一部百科全书。
- Deep source gas refers to inorganic genetic gas or abiogenic gas which comes from deep crust or upper mantle, and has apparent geology and geochemistry characteristics. 深源气是指来自地壳深部或上地幔的无机成因天然气或称非生物成因天然气,它具有明显的地质地球化学特征。
- Production Capacity of Gaswork Gas refers to the actual comprehensive production capacity of the urban gasworks in gas generation, purification and delivery. 人工煤气生产能力 指城市煤气厂制气、净化、输送等环节的综合实际生产能力。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries