查询词典 acidic

By analyzing the differences between acidic and basic catalytic action in this transesterificatios, it is considered that the main cause of yielding an anisole by-product is due to the basic catalysis, a Lewis acidic catalyst is helpful for the selective DPC formation.

通过分析酸碱催化作用在酯交换反应中的差异，认为碱催化是副产物苯甲醚生成的主要原因，Lewis酸性的催化剂有利于碳酸二苯酯的高选择性。

Paragenetic association I are composed of dissolved feldspar, quartz overgrowth and authigenetic kaolinite, This paragenetic association came into being acidic environment; Paragenetic association II include illite、albite、dissolved authigenetic quarze and kaolinite、dolomite、ankerite and ferrocalcite, the paragenetic association formed alkali environment; secondly, outcrop sandstones include paragenetic association III making up of dissolved feldspar、kaolinite、dickite and ironstone too, this paragenetic association came into being ground surface acidic environment.

成岩共生组合I由长石颗粒溶解、次生加大石英和自生高岭石组成，该组合形成于酸性成岩环境；成岩共生组合II由自生伊利石、自生钠长石、自生石英与高岭石溶解、白云石、铁白云石、铁方解石组成，该组合形成于碱性成岩环境；其次，露头砂岩还包括由长石颗粒溶解、高岭石、地开石、褐铁矿组成的第III种成岩共生组合，该组合形成于地表酸性成岩环境。

Acid rain the ozone layer 空气污染 acidic pollution ozone air pollution causes of acid rain chemical products trees SO2 O2 HCl condition of the ozone layer effects of acid rain acidic rain àHow measure acids atmosphere

空气污染(学科：化学年级：高中三年级)执教者：市北中学徐云蕾 1、空气污染已经成为人们关注的话题，本节课主要讨论空气污染的两个方面：酸雨和臭氧层空洞。

On the other hand, the mouth of the original acid-base balance, but also with the consumption of acidic, mouth for a long time in acidic environment will be conducive to the growth of plaque, which cause tooth decay and tooth decalcification.

另一方面，口腔内原本的酸碱平衡状态，也会随著进食而呈酸性，如果口腔内长时间处於酸性环境，将有利於牙菌斑的生长，进而造成牙齿脱钙及蛀牙。

Hereby, we presumed that the specific binding of CpG-ODN with TLR9 and the trigger of activating signal be likely to occur in acidic endosomes after uptaken by cells, not on cells ectoblast. It suggested that the specific binding of CpG-ODN with TLR9 very possibly needs a specifical exterior condition, an acidic pH.

但令人困惑的是目前一直未能直接观察到TLR9与CpG-ODN的特异性相互作用，而且免疫细胞膜上并不存在CpG-ODN的特异性结合位点。

The photocatalytic behavior of such prepared nano-Cu2O was evaluated by the decomposition of acidic fuchsine solution under daylight. The influence of glucose addition and the initial concentration of acidic fuchsine solution as well as the catalyst reusability were examined.

用它做催化剂在日光作用下对酸性品红溶液进行了光催化降解实验，研究了葡萄糖添加浓度、酸性品红溶液的初始浓度和催化剂的重复使用对光催化性能的影响。

The interference of reductant is eliminated by indirect iodimetry in the weak acidic medium and the content of potassium iodate is determined by direct iodimetry under acidic condition.

在弱酸性介质中，利用间接碘量法消除还原物的干扰，于酸性条件下采用直接碘量法测定碘酸钾含量。

The interference of reductant is eliminated by in direct iodimetry in the weak acidic medium and the content of potassium iodate is determined by direct iodimetry under acidic condition.

在弱酸性介质中，利用间接碘量法消除还原物的干扰，于酸性条件下采用直接碘量法测定碘酸钾含量。

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。

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。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。