下标

Fractions can be composed from superscripts and/or subscripts plus the fraction slash.

馏分组成可以由上标和/或下标再加上部分斜线。

When ploting functions In Gnuplot, you may want to add in superscripts or subscripts, or other symbols.

在Gnuplot中画函数图，有时需要加入上标下标以及特殊字符，下面教您如何得到。

Mathematical formulae, with their subscripts, superscripts, and special symbols, are devilishly difficult to translate into HTML.

将含有下标、上标和特殊符号的数学公式转换成 HTML 非常困难。

To improve the stability and the depth of the pseudo-potential well of the ion trap, two sets of RF sources and the corresponding detection circuits were designed and implemented in a Paul trap. With the implementation, absorbed signals of 199Hg(superscript +) and N(superscript + subscript 2) were detected from trapped ions.

为了满足离子囚禁稳定性以及提高离子囚禁势阱深度，设计和制作出两套囚禁离子的射频源和射频共振吸收检测电路，利用不同频率的射频源及相应检测电路在双曲线型离子阱实验装置中成功地囚禁了199Hg和N(上标+下标 2)离子得到了它们的射频共振吸收信号。

The method is applied to the determination of nitrate ion in uranium dioxide sample with satisfactory results.

该法可用于测定二氧化铀产品中微量NO(上标-下标 3)，操作简单，可行性强，可以满足测定要求。

The physicochemical indexes of the seed oil extracted by petroleum ether were as follows: relative density 0.9374 d(superscript 20 subscript 4, acid value 8.49 mgKOH/g, iodine value 64.47 gI/100 g, peroxide value 4.92 mmol/kg, saponification value 196.63 mgKOH/g.

结果表明：三叶木通籽粗蛋白含量为34.39%，粗脂肪含量为31.37%，经石油醚提取出的三叶木通籽油的相对密度0.9374d(上标 20 下标 4，酸值8.49 mg/g，碘值64.47 g/100 g，过氧化值4.92 mmol/kg，皂化值196.63 mg/g。

It was observed that indoleacetic acid could greatly enhanced the chemiluminescence intensity of tris-(1,10-phenanthroline) ruthenium Ru(phen(superscript 2+ subscript 3)-cerium system. Based on this finding, a novel CL method was developed for the determination of IAA.

基於吲哚乙酸对三（1，10-菲咯啉）钌[Ru(上标 2+下标 3)]-Ce化学发光体系的发光增强作用，建立了一种化学发光直接检测IAA的新方法。

Subscripts are composed from superscripts and aligned to bisect the baseline.

下标是从上标组成，并一致对分基准。

HTML 3.2 added widely-deployed features such as fonts, tables, applets, text-flow around images, superscripts and subscripts, to the existing HTML 2.0 Standard.

HTML3.2 向现存的HTML 2.0标准中又添加了诸如：字体、表格、Java程序、浮动、上标、下标等特征。

Oxalic acid loading substantially stimulated soil P release from A1 horizon, showing a linear relationship; but its effect on B horizon soil was relatively negligible, especially at low oxalic acid concentrations mmol L^(-1. Oxalate solutions 0.5~20.0 mmol L^(-1 oxalic acid adjusted to pH 5.16 with 10.0 mmol L^(-1) NaOH had a much higher (1.51~2.98 times) soil-P-release effect than oxalic acid solution the same in oxalate concentration. Therefore, the mechanism of oxalic acid/oxalate triggering release of soil phosphorus is assumed to be dominated by ligand-exchange or complexing reactions of oxalate anionC2O(superscript 2- subscript 4 but not simply acid-dissolving effect. The effect of oxalate anion on soil phosphorus release was found to be somewhat cumulative, i.e. the amount of P released was primarily controlled by the cumulative oxalate loading rate, relatively independent of the manner of oxalate addition (one-time or sequential).

结果表明，草酸能显著促进暗棕壤A层磷的释放，土壤磷溶出量随草酸溶液浓度升高而线性增加；但对B层土壤磷的释放效应相对较弱，草酸浓度低於5mmolL^(-1)时B层磷的释放不明显。pH5.16草酸钠溶液比相同浓度的草酸溶液具有更高的解磷效率，在设置二者浓度为0.5~20.0mmolL^(-1)时，前者的解磷量是后者的1.51~2.98倍，推断草酸盐溶液或凋落物淋洗液中草酸类物质促进暗棕壤磷释放的主要机理在於草酸阴离子C2O(上标 2-下标 4配位反应。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失