酸性的

The existence of acid deposition or acid precipitation has been known for years. Only in recent years, however, has acid deposition been recognized as a problem.

酸性排泄物和酸性降落物的存在已被知晓了许多年，但仅在最近几年酸性排放物被认为是一个环境问题了。

The method is based on the diazo-reaction between nitrite ion and fuchsin acid in a hydrochloric acid medium.

研究了在酸性介质中，NO2-与酸性品红发生重氮化反应，致使酸性品红的荧光强度随NO2-加入量增加而明显降低的现象，建立了荧光熄灭法测定痕量NO2-新方法。

The results show that the obtained nanoscale zero valent iron particles are mostly in spherical shape with less than 100 nm in size. The acid fuchsine can be removed by nanoscale zero valent iron particles efficiently. The efficiency of removing acid fuchsine from solution is increased with increasing temperature and the dosage of nanoscale zero valent iron particles and decreasing initial concentration of acid fuchsine. The mechanism of removing acid fuchsine by nanoscale zero valent iron particles may include dual functions of absorption and degradation, and the degradation may play a major role in the reaction.

研究结果表明：纳米零价铁颗粒为球形，单个颗粒粒径小于100 nm；纳米零价铁对酸性品红有很好的脱除作用，酸性品红的脱除率随温度的升高、纳米零价铁用量的增加以及酸性品红初始浓度的降低而逐渐增大；纳米零价铁对酸性品红有吸附和降解的双重作用，而以降解作用为主。

The regolith was expected to be very acid—probably too acid even for crops such as peanuts, potatoes and carrots that like their soils with low pH.

本来预计表层土壤酸性会很强——很可能对如花生，土豆及萝卜一类喜好酸性土壤的作物而言都觉得酸性过强。

The regolith was expected to be very acid—probably too acid even for crops such as peanuts, potatoes and carrots that like their s oil s with low pH.

本来预计表层土壤酸性会很强——很可能对如花生，土豆及萝卜一类喜好酸性土壤的作物而言都觉得酸性过强。

Considering the quality index comprehensibly, the treatments of high yield with fine quality were 1.5N treatment in strong acidic soil, 2N1.5K trentment in acidic soil and 2 treatment in slight acidic soil, which contents of Vc, amino acid, soluble sugar, solid substance and total acidity were rather higher and the content of nitrate was lower.

甜椒果实Vc、氨基酸、可溶糖和固形物含量较高、硝酸盐含量较低的优质高产组合为：强酸性土壤1.5N处理、酸性土壤2N1.5K处理和微酸性土壤2处理。

In the absence of organic solvent and phase-transfer reagent, the catalytic oxidation of cyclo- hexene to adipic acid with aqueous 30% hydrogen peroxide can be achieved in the presence of tungstic acid/acidic organic additive.

以钨酸/有机酸性添加剂为催化体系，在无有机溶剂、相转移剂的情况下，催化 30%过氧化氢氧化环己烯合成己二酸。当钨酸∶有机酸性添加剂∶环己烯∶过氧化氢=1∶1∶40∶176(摩尔比，钨酸用量为 2.5 mmol)时，使用有机酸性添加剂考察钨酸的催化性能，结果表明以钨酸/间苯二酚催化氧化环己烯的催化效果最优，反应 8 h 时己二酸分离产率达 90.9%、纯度为～100%；而不使用有机酸性添加剂时，己二酸分离产率只有 72.1%，产品纯度为 96.2%。

Fromthe point of view of chemical components,α-cellulose content for differentage-degrees bamboo is mostly the same,slightly increasing with the growth ofage,lignin content increases with the growth of age,the contents of extract,hemicellulose,polysaccharose,mineral elememts decrease with the growth ofage;the result shows the electric conductivity of bamboo is mainly decided bythe content of mineral elements,with the growth of age,volume resistivitybecomes great.pH value shows acid,acidity decreases with the growth of age,this is mainly due to the decrease of fraction of bamboo parenchyma with thegrowth of age.

从化学成分角度来说，不同年龄竹材α-纤维素含量差异不大，一般随着年龄增大而增大；木质素含量随着年龄增大而增大；抽提物、半纤维素、聚戊糖、灰分含量随着年龄增大而降低；研究表明竹材的导电性主要由矿质元素含量大小决定，随着年龄增大，体积电阻率越来越大；pH值呈酸性，酸性随着年龄增大而减弱，这主要由于竹材薄壁组织比量随着年龄增加而减少，内含物如淀粉减少，导致酸性减弱。

An experiment was designed to investigate the color fastness of poplar veneer after being dyed with acid red GR, acid black ATT, and acid orange Ⅱ.

以酸性大红GR、酸性黑ATT和酸性橙Ⅱ为染色试剂，选取染色温度、染液pH值、固色剂和均染剂的质量分数为工艺参数，进行意杨单板染色试验和颜色坚牢度测定。

An analytical method based on high performance liquid chromatography with diode array detector has been established for the simultaneous determination of 9 water-soluble colorants (Solvent Green 7, Food Yellow 3, Food Red 17, Acid Yellow 1, Acid Red 33, Food Red 4, Food Red 1, Orange I, Acid Orange 7) in cosmetics.

建立了用高效液相色谱-二极管阵列检测器同时检测化妆品中9种水溶性着色剂（溶剂绿7、食品黄3、食品红17、酸性黄1、酸性红33、食品红4、食品红1、橙黄I、酸性橙7）的检测方法。

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。