酸性

The characters of geochemistry are rich alkali. And at the same time the content of calcium is high. They are rich in alkali, high in Potassium, enriched in LILE, LREE and Pb, depleted in HFSE and have a small Sr, Nd, Pb isotope range. Their source is probably a kind of even metasomatic mantle. This is consistent with the fact that there is kimberlite containing flogopite in the deep-source enclosure of Cenozoic super-K alkali lava in the southern part of this rock zone.

组成这些钾质碱性岩带的岩石：在岩相上，包括深成相、浅成相和喷溢相等不同岩相；在岩性上，从超基性、基性、中性到酸性岩石；造岩矿物，从超基性到酸性岩石中均有透辉石，在基性、超基性岩中有霞石；在岩石化学成分上，所有岩石均表现出富碱高钾富钙，微量元素富集Rb、Sr、Ba等大离子亲石元素和Th、U等放射性元素，贫Nb、Ta、Zr、Hf等高场强元素；稀土元素富集轻稀土，铕负异常不明显；Sr、Nd、Pb同位素组成，显示了物质来源于富集地幔源区。

Alkaline substances will change the colour of red litmus paper to blue and it taste bitter.

酸性物质具有极酸的味道，它把蓝色石蕊试纸变成红色；碱性物质具有极苦的味道，它会把红色石蕊试纸变成蓝色；中性物质不含酸性或碱性，它不会使蓝和红石蕊试纸改变颜色。

The results show that when the depth gradually reduces, pH values gradually increase, but conductivities and (superscript – subscript 3) content gradually reduce. There are also obvious differences between the groundwater in loess, alluvial deposit and acidity rock in the south of Chang'an, which relates to the depth, the characters of loess, the lixiviation and the evaporation. The element content of groundwater is high in the loess tableland, so it's fitter for drinking than the groundwater in the Cuihua mountains, which is of acidity and low element content.

结果表明，长安南部黄土塬随着层位的降低，pH值有逐渐增大趋势，电导率和HCO(上标–下标 3)含量有逐渐减少的趋势；黄土地下水、冲积层地下水和酸性岩石地下水的化学成分存在明显差异，这与其理深、地层性质、溶滤与蒸发作用不同有关；长安南部少陵源黄土地下水元素含量较高，比呈酸性、元素含量低的翠华山泉水更适于饮用。

All of these three metallogenetic series can be merged as one group of metallogenetic series, i.

其中，湘桂成矿单元有：Ⅰ-燕山早期中酸性花岗岩类有关的W、Sn、Sb、Pb、Zn矿床成矿系列：Ⅱ-燕山晚期酸性花岗岩类有关的W、Sn矿床成矿系列：Ⅲ-燕山早期构造-热事件有关的Au、Ag、Cu、Pb、Zn矿床成矿系列。

The use of acid protease in the production of machine-made yellow rice wine (by non-glutinous rice) could provide nitrogen source for the growth and reproduction of microzyme and accelerate rapid reproduction of microzyme (which improve fermentation stability and capability), decompose proteins (which advanced the use of amylum in raw materials and increased wine yield), and settled the commonly existed problems of low aminophenol nitrogen content and non-sugar solids content.

酸性蛋白酶在粳米黄酒酿造中可为酵母菌的生长繁殖提供氮源，促进酵母菌的快速繁殖，提高发酵过程的稳定性和能力；分解原料中的蛋白质物质，促进对原料淀粉的利用，提高原料的出酒率；可有效解决机制粳米黄酒过程普遍存在的低氨基酸态氮、低非糖固形物的问题；酸性蛋白酶在发酵酒醅中的澄清作用，为黄酒成品解决非生物浑浊提供了方法。

Thus theoretically, weakly acidic drugs are more readily a orbed from an acid medium than are weak bases.

因此，从理论上讲，弱酸性药物在酸性介质中比弱碱性药物更易吸收。

Here, we supposed that the manganese and singlet oxygen coexisted in the acid potassium permanganate system.

第三章酸性高锰酸钾体系化学发光机理研究本文对第二章研究报告中使用的酸性高锰酸钾体系的化学发光机理进行了仔细研究。

A simple estimation method for molar Gibbs free energy and enthalpy of formation for complex oxysalt minerals is proposed. Complex oxysalt minerals are divided into complex oxysalt minerals with water and complex oxysalt minerals without water. Complex oxysalt minerals without water can be considered as the composite of acidic oxides and alkaline oxides, so their molar Gibbs free energy or molar enthalpy of formation can be calculated by the summation of molar Gibbs free energy or molar enthalpy of formation of the acidic oxides and alkaline oxides which are combined into the complex compounds.

提出了一种复杂含氧盐矿物的摩尔生成Gibbs自由能和摩尔生成焓的简单估算方法，并把复杂含氧盐矿物分为不含水复杂含氧盐矿物和含水复杂含氧盐矿物，不含水复杂含氧盐矿物可以看作是酸性氧化物和碱性氧化物组成的物质，其摩尔生成Gibbs自由能或摩尔生成焓都可以看作是酸性氧化物和碱性氧化物复合成的化合物摩尔生成Gibbs自由能或摩尔生成焓之和。

The Advanced Oxidation Processes of ozonization technique was used in treatment of the acid red B dye wastewater.

目的 研究臭氧氧化技术处理酸性红B染料废水的效果，并探讨O3投加量、废水的初始pH值、H2O2和O3物质的量比对臭氧氧化处理酸性红B染料废水效果的影响。

The acid water in coal pit can be well controlled by adding calcium carbonate and lime.

同时也介绍了处理酸性水的流程。阐述通过添加碳酸钙和石灰，可使酸性采煤坑水得到很好治理。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。