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This paper deals with the determination of the content of ofloxacin in ofloxacin otic solution and studies its stability by UV spectrophotometry.

本文用紫外分光光度法测定氧氟沙星滴耳液中主药氧氟沙星的含量，并考察了该制剂的稳定性。

The components and structures of oxyfluoride glass ceramics, the formations and detections of nanocrystals, upconversion luminescence mechanisms and impact factors are analyzed systematically.

综述了近年来用于上转换发光的氧氟微晶玻璃的研究概况，阐述了氧氟微晶玻璃的组分与结构、微晶的形成与检测、上转换发光机理及影响因素。

Effect of host composition on upconversion and Raman spectra of Er~(3+)-doped oxyfluoride germanosilicate glasses was investigated, and upconversion mechanisms of Er~(3+) in oxyfluoride germanosilicate glasses were analyzed.

研究了基质玻璃成分对Er3+掺杂氧氟锗硅酸盐玻璃上转换光谱和Raman光谱的影响，分析了氧氟锗硅酸盐玻璃中Er3+的上转换发光机理。

The result indicated that: the solubility of phosphorus pentafluoride in aether was decreasing as temperature rising; when temperature rises from 0℃ to 30℃, the solubility of phosphorus pentafluoride in aether decrease from 1.5448g/mL to 0.7335g/mL.

通过实验发现，五氟化磷在乙醚中的溶解度随温度的升高而下降，当温度从0℃上升至30℃时，五氟化磷在乙醚中的溶解度从1.5448g/mL下降到0.7335g/mL。

In order to further understand the dependence of bioactivities on the structure of new fluorine-containing pesticidal compounds to build up significant ligand-receptor models, and to find out the pharmacophores of these analogues, 3D-QSAR analyses have been carried out with DISCO, CoMFA and Leapfrog approaches on the basis of our previous classical QSAR study. Firstly, the compounds were classified according to their structures.

为了能更深入地认识含氟新化合物作为农药的生物活性和其结构间的关系，建立有意义的药物-受体作用模型，寻找同类化合物的药效团，对合成的含氟化合物在经典QSAR方法研究的基础上，又进一步运用DISCO，CoMFA和Leapfrog方法研究了它们的三维构效关系。

The effects of sodium silico-fluoride on the zeta-potential, hydrophility and adsorption of styryl phosphonic acid of diaspore particle surfaces have been systematically studied.

系统研究了氟硅酸钠对一水硬铝石表面ζ电位、亲水程度及苯乙烯膦酸吸附的影响，提出了苯乙烯膦酸浮选金红石与一水硬铝石时氟硅酸钠对一水硬铝石的选择性抑制作用机理。

In this paper, prediction of the back surface reflection, which is based on attenuation and phase velocity dispersion estimation method, in highly attenuating plastic (polyvinylidene fluoride—PVDF) has been described.

在本文中，预测背部表面反射，这是基于衰减和相速度色散估算方法，在高衰减塑料（聚偏氟乙烯-聚偏氟乙烯）已被描述。

Polyvinylidene fluoride was used to prepare solvent base fluorocarbon coating, and the solvent constitution of PVDF coating was screened and optimized.

摘要用聚偏氟乙烯树脂制备了溶剂型氟破涂料，筛选并优化了PVDF涂料的溶剂组成。

Polyvinylidene Fluoride PVDF homopolymer conforming to ASTM D-3222, Type I, Grade 2, is a tough, abrasion-resistant fluorocarbon material that has a design stress of 1,360 psi at 73°F and a maximum service temperature of 280°F.

聚偏二氟乙烯PVDF均聚物，符合ASTM D-3222，类别1，等级2标准，是一种坚固的、耐磨的碳氟化合物材料，在22oC下，其设计应力为1，360 psi，最高工作温度达到137oC。

Through replacing copper Tri-fluoroacetate by copper α-methacrylic in Metal Organic Deposition process, the total amount of fluorine in YBCO precursor solution was reduced by about 50%. As a result, the calcination period for YBCO precurse film was dramatically reduced.

在金属有机盐沉积法制备YBCO薄膜的工艺中，采用无F的α甲基丙烯酸铜取代原来的三氟乙酸铜，可以降低前驱溶液中大约50%的氟含量。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。