Initial heating of the phenol and formaldehyde (in the presence of an acid or base to get the reaction going) produced a shellac-like liquid good for coating surfaces like a varnish.
开始加热，酚和甲醛(需有酸或碱促使其反应进行)便产生了像紫胶样的液体，能像清漆一样涂于物体表面。
Theories abound as to why this happens, with some bloggers speculating that it is an acid-base reaction because Coke is acidic.
一些blogger们深思后得出了解释这一现象的原因的理论——这是种酸碱反应，因为可乐是酸性的。
Measurements of the pH of the Coke before and after the experiments showed that its acidity did not change, ruling out the idea that a simple acid-base reaction drives the fountains.
经过测量反应前和反应后实验前后的可乐pH值发现前后酸性没有发生变化，排除了简单的碳酸反应导致这喷泉影响的想法。
Should try to avoid acid-base media used interchangeably (except in and reaction medium) in order to avoid shortening life expectancy.
应尽量避免酸碱介质交替使用(除中和反应介质)，以免缩短寿命。
The generalized oxidation and reduction reaction includes acid-base reaction, precipitation reaction, coordination reaction and ordinarry oxidation reduction reaction.
土壤化学中的酸碱反应、沉淀溶解反应、配位反应和氧化还原反应都属于广义氧化还原反应。
Based on soil tests in different regions of Jilin province, this paper evaluated soil nutrient state and acid-base reaction in forestry nursery.
本文通过不同区域点位土壤测试，对吉林省林业苗圃土壤养分状况、酸碱反应进行了评价。
The results show that the polarity and acid-base reaction is remarkable between the title compounds and the solvents because of the existence of carbonyl.
结果表明在查尔酮系列化合物中由于羰基的存在，溶剂和溶质问极性作用、酸碱作用比较显著。
Hartshorn(NH_(4)OH) was used as a new catalyst instead of acetic acid in the saponification reaction of base zinc salt of dioctyl thiophosphate (T203).
选用氨水溶液代替醋酸作为新型催化剂用于硫磷双辛基碱性锌盐（T203）的皂化反应。
The urea-formaldehyde resin is formed by the reaction of urea, formaldehyde, aldehyde, one or more stabilizers and modifier according to the route of weak base-weak acid-weak base.
脲醛树脂由尿素、甲醛、二醛和一种或多种稳定剂、改性剂，按照弱碱-弱酸-弱碱 的路线反应而得。
The paper describes the transesterification reaction of oil and fat with alcohol to make fatty acid ester in presence of a solid base catalyst.
本文采用固体碱催化油脂和醇进行酯交换反应制备脂肪酸酯，着重于固体碱催化剂的研制及工艺优化。
Having only one hydrogen ion to donate to a base in an acid-base reaction; monoprotic.
一（碱）价的在酸碱反应中只有一个氢离子转移到碱上的；
Having only one hydrogen ion to donate to a base in an acid-base reaction; monoprotic.
一（碱）价的在酸碱反应中只有一个氢离子转移到碱上的；
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