1)  bf4 counter tube
三氟化硼计数管
2)  boron trifluoride counter
三氟化硼计数管
3)  BF3 counter tube
三氟化硼计数管
4)  trifluoro-
三氟
5)  trifluoromethane
三氟甲烷
1.
Design calculation steps of trifluoromethane fire extinguishing system have been introduced.
介绍了三氟甲烷灭火系统设计计算流程,灭火剂设计用量、流体计算等设计参数的确定方法。
2.
In order to treat the greenhouse gas, trifluoromethane (CHF3), via incineration process, the CHF3 should be separated from the gas mixture of CHF3 and HCl, which is the tail gas produced during the production of refrigerant HCFC-22.
测定了三氟甲烷和氯化氢气体在烷烃、氯代烃、醇、酮、醚、酯等几种有机溶剂中的溶解度,比较了这两种气体在不同溶剂中的溶解度差别,讨论了采用溶剂吸收法对其混合气体进行分离的可能性。
3.
Vapor-liquid equilibrium(VLE) data for the R23(trifluoromethane) + R116(hexafluoroethane) system were measured at temperatures of 194.
利用气相循环法的实验装置测量了R23(三氟甲烷)+R116(六氟乙烷)二元体系在5个温度(194。
6)  trifluoroethanol
三氟乙醇
1.
Preparation of trifluoroacetaldehyde and trifluoroacetic acid by trifluoroethanol catalytic oxidation;
催化氧化三氟乙醇制备三氟乙醛和三氟乙酸
2.
Some trifluoethoxylpyridine ether derivatives were successfully synthesized by reacting 4-nitro-pyridine-N-oxide derivatives with trifluoroethanol in the presence of alkali.
在催化剂碘化亚铜作用下,用卤代芳烃衍生物与2,2,2-三氟乙醇钠进行反应,制得芳烃三氟乙基醚。
3.
Physical and chemical properties of trifluoroethanol were introduced.
介绍了三氟乙醇的物理和化学性质,叙述了三氟乙醇的不同合成方法及其在医药、溶剂、热力工质等领域的应用研究进展。
7)  nitrogen trifluoride
三氟化氮
1.
Application of ASPEN PLUS in Nitrogen trifluoride-Carbon tetrofluoride Azeotropic Distillation;
ASPEN PLUS软件在三氟化氮-四氟化碳体系共沸精馏中的应用
2.
In order to prolong the useful life of electrode and improve the efficiency of current,and to reduce the pollution of nickel on electrolyte and the cost of producing NF_3,the nickel anode was substituted by carbon anode in the course of producing nitrogen trifluoride(NF_3).
为提高电极的应用时间、提高电解槽的电流效率、降低镍对电解质的污染和降低生产成本,将现行制备三氟化氮(NF3)的阳极材料由镍换为碳。
8)  boron fluoride
三氟化硼
1.
These(preliminary) studies indicate that the boron fluoride with nitromethane or acetone system with higher separation factor is superior to the anisole system used currently,but a more detailed study is.
采用苯甲醚、硝基甲烷、丙酮、甲基异丁基甲酮4种络合剂分别与三氟化硼合成出了4种络合物体系。
2.
The isotopes of boron,~(10)B and ~(11)B,were separated by means of a gas-liquid chemical exchange reaction and distillation involving the isotopic equilibrium between gaseous boron fluoride and a liquid boron fluoride-donor molecular addition complex.
设计了合成络合物体系的实验反应器,并用这些络合剂分别与三氟化硼合成了4种络合物体系。
9)  trifluoroacetic acid
三氟乙酸
1.
Preparation of trifluoroacetaldehyde and trifluoroacetic acid by trifluoroethanol catalytic oxidation;
催化氧化三氟乙醇制备三氟乙醛和三氟乙酸
2.
Polyester nanofiber can be prepared by electrospinning process from PET chips separately dissolving in three kinds of solvents,namely,the mixture solvent of phenol and tetrachloroethane,trifluoroacetic acid and the mixture solvent of trifluoroace- tic acid and dichlormethane.
利用静电纺丝法制备聚酯(PET)纳米纤维,选择苯酚和四氯乙烷,三氟乙酸,三氟乙酸和二氯甲烷3种溶剂分别溶解PET切片进行静电纺丝,通过扫描电子显微镜(SEM)对纤维表面形态进行观察,结果表明:三氟乙酸和二氯甲烷混合溶剂溶解PET制备的电纺纤维较好。
10)  Trifluoroacetic acid
三氟醋酸
1.
We have reported a novel derivative of(L)-cysteine hydrochloride monohydrate in which the sulfur was protected by the acetamidomethyl(Acm) in trifluoroacetic acid reagent.
以L-半胱氨酸盐酸盐水合物为原料,在三氟醋酸溶剂体系中对巯基(—SH)进行乙酰氨甲基(Acm)保护,可制得标题化合物。
补充资料：三氟化硼
    　　BF3　硼的氟化物,无色、具刺激性臭的窒息性气体。熔点-128.37℃，沸点-99.9℃。可溶于水，在热水中水解，呈酸性，对玻璃有腐蚀作用。可与金属钠、钾、钙、铝、钛、锆及其氧化物起剧烈反应，易与乙醚形成稳定的络合物。
　　
　　传统的生产方法是以硼砂、萤石在硫酸存在下反应制得。此法收率低，且有四氟化硅杂质。20世纪80年代工业上多用氟硼酸盐与硼酐和硫酸一起加热，生成的气体经净化后进入收集器，深冷后再分馏即得产品。
　　
　　在有机化工中，三氟化硼主要用作酯化、烷基化、聚合、异构化、磺化、硝化反应的酸性催化剂，也用于制备卤化硼、元素硼、硼烷与硼氢化钠等硼化物。
　　

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参考词条