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Methods The ionization constant was determined with acid-basle titration in acetone/water solutions with different ratios, the pH at half neutralization point was regarded as pKa, the value to infinite diluted in pure water was explored and the lgP was determined with bottle-shaking method by HPLC.

方法采用酸碱滴定法测定各不同体积比的丙酮-水溶液中药物半中和点时的pH值作为药物在该体积比的丙酮-水溶液中的pKa值，再外推至纯水中药物浓度无限稀释时的pKa值；采用HPLC配合摇瓶法测定药物的分配系数。

The transmission ratio exceeded 95% in near-infrared range, so the LCAS:Tm(superscript 3+) glasses can be used as high transmission optical glasses. The integral emission cross-sections outclassed 10^(-18)cm, the fluorescent ratios were higher and the radiative lifetimes were lenger, to the glasses are possible to be used as new laser function materials. The new strong and broad emissive bands for 400nm to 680nm emerge in the emission spectra of the another glasses samples.

高达95%以上近红外透过率表明，LCAS：Tm(上标 3+)玻璃可作为近红外波段高透过率光学玻璃；远大于10^(-18)cm的积分发射截面、较高的荧光分支比与能形成粒子数反转的荧光寿命表明，LCAS：Tm(上标 3+)玻璃可能成为一种新的激光功能材料。

In this paper, a branch and bound algorithm is proposed for globally solving the sum of linear ratios problem.

为求线性比试和问题的全局最优解，本文给出了一个分支定界算法。

The micro lysimeters were employed to determine the process of soil evaporation of winter wheat at its growth stages under sprinkling irrigation condition.Ratios of soil evaporation to at each growing stage of winter wheat were investigated in the wheat field with different water treatments.

利用微型蒸渗仪研究了喷灌条件下冬小麦生长期间的土壤棵间蒸发过程，分析了3个不同灌溉量下的棵间蒸发占蒸散的比例及其随叶面积指数和表层土壤含水量的变化关系、灌溉后土壤蒸发的变化过程。

R adiogenic isotope ratios can be used as a kind of petrogenetic "DNA" to identify the source components of magmas.

放射性同位素可以用作一种岩石成因的& DNA &来识别岩浆源区的组成。

In order to find out the main influence factor to the water stability of granite asphalt mixture and make large-scale use of granite aggregate in asphalt pavement possible. dynamic shear rheometer was used to study the rheological properties of asphalt mastics with different granite powders and different filler-asphalt ratios to analyse the interaction ability between different granites and asphalt.

为了找出影响花岗岩沥青混合料水稳定性的主要因素，使花岗岩大规模应用于沥青路面成为可能，从花岗岩沥青胶浆着手，采用动态剪切流变仪，对不同花岗岩石粉、不同粉胶比条件下的沥青胶装进行流变性能的研究，以此分析不同花岗岩与沥青交互作用能力。

There are strict mathematical ratios governing the ideal smile, says Dr Davis. Its width should be no less than half the of the face at the same height and, for the best effect, both upper and lower lips need to be symmetrical each side of the mid-line .

有控制完美笑容的精确比例戴维斯博士说，完美笑容不宽于半张脸，而且要达到最好的效果，还要上下嘴分别位于脸的中线的两侧。

There are strict mathematical ratios governing the ideal smile, says Dr Davis. Its width should be no less than half the of the face at the same height and, for the best effect, both upper and lower lips need to be symmetrical each side of the mid-line of the face.

有控制完美笑容的精确比例戴维斯博士说，完美笑容不宽于半张脸，而且要达到最好的效果，还要上下嘴分别位于脸的中线的两侧。

At higher magnification, the neoplastic glands of gastric adenocarcinoma demonstrate mitoses, increased nuclear/ cytoplasmic ratios, and hyperchromatism .

高倍镜下可见胃癌腺体内的癌细胞有病理性核分裂像，核浆比例增大，核的染色加深。

The compounds, when used as the active layer in OTFTs exhibit device characteristics, like charge-carrier mobilities and current on/off ratios, that are comparable to those of pentacene.

所述化合物用作OTFT中的活性层时，可显示出与并五苯相当的器件特性，例如电荷-载体迁移率和电流开/关比。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。