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。
Properties and usages of tetrafluoromethane are introduced.
介绍了四氟甲烷的性质、用途,叙述了烷烃直接氟化法、氟氯甲烷氟化法、氢氟甲烷氟化法和氟碳直接合成法等制备四氟甲烷的方法,并以具体实例说明。
One of the main research objectives of this study is how to convert CCl_2F_2 to valuable chemical compounds of tetrafluoromethane(CF_4).
CCl_2F_2(CFC-12)曾广泛用作制冷剂和推进剂,是消耗臭氧层的罪魁祸首,如何将CCl_2F_2转化为高附加值的四氟甲烷(CF_4)是本研究的目标之一。
1, 1, 1, 2-tetra fluoro ethane[2] (hfc-134a)
1,1,1,2-四氟乙烷(HFC-134A)
dibromotetrafluoroethane [halon 2402] [C2F4Br2]
二溴四氟乙烷〔哈龙2402〕
HFA-134a driven salbutamol sulfate metered-dose inhaler:formulation screening and respiratory tract absorption in rats
硫酸沙丁胺醇/四氟乙烷气雾剂的处方筛选和大鼠呼吸道吸收研究
Difluorochloromethane for tetrafluoroethylene productio
GB/T9016-1988四氟乙烯用二氟一氯甲烷
Synthesis of Hexafluoropropene by Co-pyrolysis Reaction of Tetrafluoroethylene with Octafluorocyclobutane;
四氟乙烯和八氟环丁烷共裂解制六氟丙烯反应工艺的研究
polytetrafluror-ethylene (teflon)
聚四氟乙烯（特氟隆）
Ethylene-tetrafluoroethylene ETFE
乙烯-四氟乙烯共聚物
tetrafluoroethylene-vinylidene fluoride copolymer
四氟乙烯-偏氟乙烯共聚物
teflon insulated wire
聚四氟乙烯绝缘电线
teflon clad fiber
聚四氟乙烯包层光纤
polytetrafluoroethylene aqueous dispersio
聚四氟乙烯水分散液
teflon coaxial cable
聚四氟乙烯同轴电缆
polytetrafluoroethylene coated dry film
聚四氟乙烯涂覆薄膜
The enterprise dongyang sihuan antisepsis equipment co., ltd. offers among other things Polytetrafluor ethylene and Polytetrafluoroethylene.
公司专业从事聚四氟乙烯以及聚四氟乙烯业务。
Study on Gas-phase Catalytic Synthesis Technology of Pentafluoroethyliodide
五氟碘乙烷的气相催化合成技术研究
Research Progress in the Fluorination of 3,3,3-Trifluoropropene from 1,1,1,3-Tetrachloropropane
1,1,1,3-四氯丙烷氟化合成 3,3,3-三氟丙烯研究进展
Teflon: Trademark for a polymer of tetrafluoroethylene fluorocarbon (polytetrafluoroethylene [PTFE]).
铁氟龙:四氟乙烯(PTFE)或氟化的乙烯－丙烯(FEP)的聚合物的商标名。
Research on Synthesis of Vinyl and Trifluoropropyl Silane Coupling Agents;
含乙烯基及三氟丙基的硅烷偶联剂的合成研究