氟

These salts can beprepared on treatment of phosphinimines with trifluoroaceticanhydride. After addition-elimination, triflromethylated β-enaminoesters and β-iminoesters were synthesized by thereaction of the above salts with organozinc reagents.

通过膦亚胺和三氟乙酸酐反应制备了N-三氟乙酰基氨基膦盐，该膦盐和锌试剂发生加成-消除反应后，合成了含有三氟甲基的β-烯胺酯和β-亚胺酯。

The experimental results have shown that ofloxacin in HCl (0. 1 mol/L)solution has maximum absorptivity at 293nm. Good linear correlation is seen between concentrations of ofloxacin in the range of 18 μg/ml and their absorptlvity. The results of experiment of stability show that light and heat have almost no effect on ofloxacin otic Solution. The validity is two ...

实验结果表明氧氟沙星用盐酸作溶剂在紫外区有最大吸收，最大吸收波长为293nm，在测定范围内（1－8μg／ml）浓度与吸光度呈线性关系；药用辅料对浦耳液中氧氟沙星的含量测定无干扰；稳定性试验表明光、热对氧氟沙星滴耳液（pH＝6－7）的含量影响不大，根据加速试验和室温留样试验可将本品有效期定为二年。

At the first part of this work, the basic characteristics and the development of the research on the oxyfluoride glass ceramics was reviewed, and the optical properties of oxyfluoride glass ceramics doped with Ho〓, Er〓, Tm〓 ions, also that of the precursor oxyfluoride glasses was studied.

本工作第一部分对氟氧化物玻璃陶瓷的基本特点、研究概况进行了综述，同时，对Ho〓，Er〓，Tm〓离子掺杂的氟氧化物玻璃陶瓷及其前驱体—氟氧化物玻璃材料的基本光谱性质进行了研究。

This paper studies the steady state luminescent behavior of Yb 3+ Er 3+ codoped and Er 3+ mono doped oxyfluoride vitroceramic materials.

研究了Yb3+Er3+共掺和Er3+单掺氟氧化物玻璃陶瓷材料的稳态发光行为，对氟氧化物玻璃陶瓷，氟氧化物玻璃和氟化物玻璃中Yb3+Er3 +的交叉能量传递效应也进行了细致的研究。

A process of preparing phosphorus pentafluoride was put forward: first, mesneproduct was prepared from phosphorus pentoxide and anhydrous hydrogen fluoride; second, phosphorus pentafluoride was acquired after dealing with the hexafluorophosphoric acid.

本文以五氧化二磷和无水氟化氢为原料，首先制备中间产物六氟磷酸，再通过对六氟磷酸进行处理以生产五氟化磷。

The electrode has been used for the determination of Fleroxacin in medicinal injection by the standard curve method. The procedures of this method are simple and the results obtained agree with those of pharmacopeial method.

本研究以氟罗沙星与硝酸铋形成的缔合物为电活性物，制备了PVC膜氟罗沙星涂丝选择电极，并用该电极对氟罗沙星注射液的含量进行了测定，结果与药典法相符。

Existing status of exhaust gas, waste residue, fluorine-containing wasted hydrochloric acid and raffinate from production of tetrafluoroethylene, hexafluoropropylene , their treatment and comprehensive utilization are introduced.

介绍了四氟乙烯、六氟丙烯生产过程中产生的废气、废渣、含氟废盐酸、残液的现状和治理、综合利用方法。

A method of high performance liquid chromatography with post-column derivatization and terbium sensitized fluorescence for simultaneous determination of residues of ciprofloxacin, norfloxacin and enrofloxacin in chicken was established, based on the effect that Tb3+ can sensibilize fluorescence of fluoroquinolones.

基于氟喹诺酮类药物与铽离子形成配合物后的荧光增强作用，建立了同时检测鸡肉中氟喹诺酮类药物环丙沙星、诺氟沙星和恩诺沙星残留的Tb3+增敏高效液相色谱柱后衍生荧光检测方法。

The results indicate that aluminum fluoride product will be returned about 140 t,sodium silicofluoride and cryolite are 238 t and 206 t,and neutralization residue is 375 t,if the mother liquor output of aluminum fluoride product is 4000 t per year.The annual economic benefit will reach 1,400,000 yuan RMB.

半工业化实验结果表明：计算年产4 000 t氟化铝产品的母液，企业可回收产品氟化铝140 t，生产副产品氟硅酸钠238 t、冰晶石206 t、中和残渣375 t，每年可获效益140万元人民币。

Silicofluoride acid radical of the mother liquor will be transformed into sodium silicofluoride if excess sodium chloride was added,and the mother liquor was refined.The refined hydrofluoric acid and various aluminum can compose the by-product-cryolite,which can improve the collection rate of fluorin,aluminum and silicon.

其关键技术为氯化钠脱硅：投入过量氯化钠，使母液中氟硅酸根转化成副产品氟硅酸钠，母液被精制；再加入精制氢氟酸与各形态铝合成冰晶石副产品，从而有效地提高了氟、铝和硅的收率。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。