This is a simple and really impressive use of household acids and bases that can be made again and again.
这个很简单，也很有意思。它需要一些家用酸和基本材料，这些都可以被反复利用。
If you took more advanced chemistry, you might have learned that bases are substances that can donate electron pairs, and that acids are substances that can accept them.
如果你进一步的学习了高等化学，那么你可能会知道，碱是指可以给出电子对的物质，而酸则是指可以接收电子对的物质。
DNA also has this sort of combinatorial system where you have a finite number of, I guess, bases or amino acids that could combine to a possible infinity of strings of DNA strings.
脱氧核糖核酸也拥有这种组合系统，你的生物基础或氨基酸数量是有限的，但却能组合出，几乎无限的脱氧核糖核酸螺旋结构。
For DNA, these units are the c, t, a and G bases, and for proteins the units are 20 different amino acids.
对DNA来说，这些单位是C、T、A和G碱基，对蛋白质来说这些单位是20个不同的氨基酸。
Look at basic acids, bases, and salts. Understand the definition for use in chemistry. Explore the concept of equilibrium and how (when aqueous) basic acids, bases, and salts react.
学习酸，碱和盐的基础知识。理解在化学中对它们的定义。研究平衡的概念并了解简单的酸，碱，盐(在水溶液中)如何反应。
Hydrolysis of polymers, as with their low-molecular weight analogs, is often catalyzed by traces of acids or bases.
和它们的低分子量的类似物一样，微量的酸或碱常能促进聚合物的水解。
Proteins behave either as acids or bases and are said to be amphoteric.
蛋白质习性又像酸又像碱，因此说它是两性的。
Acids react with bases to form salts.
酸与碱反应形成盐。
Cuvettes are highly chemically resistant. The plastic disposable cuvettes can be used with most polar organic solvents, as well as acids and bases.
试管耐化学腐蚀。塑料通用试管可以使用最常用的有机溶剂，比如酸和碱。
Because of its structure and relative stability, DNA can be tested even after mixture with acids, bases, gasoline, oil, or bleach.
因为它的结构和相对稳定性，甚至在与酸、碱、汽油、石油或者漂白剂混和的情况下，DNA鉴定还是可以进行。
Metal oxides contain a metal cation and the oxide anion (O2 -); they typically react with water to form bases or with acids to form salts.
金属氧化物是含有一个金属阳离子和氧化物阴离子(O2-)的结晶固体。它们典型地与水反应生成碱，或与酸反应生成盐。
An amphoteric compound reacts with both acids and bases to form salts.
两性物质，既与酸也与碱发生反应生成盐。
Up to the present, no general formula, covering all kinds of multiple equilibrium systems of mixed acids and bases has appeared in chemical literature.
目前在化学文献中还没有一个能够包括各种混合酸碱的复杂体系的通用计算公式。
Effects of leaching with simulated acid rain and low molecular weight organic acids on exchangeable bases of red soil were investigated using undistributed soil columns.
采用原状土柱进行模拟淋溶实验，比较研究了模拟酸雨和几种低分子量有机酸对红壤交换性盐基的影响。
Resistant to oils, greases, aliphatic solvents, humidity, diluted acids and bases. Very flexible, vibrations-resistant.
抗油、脂、脂肪族溶剂、湿气、稀释过的酸及碱。本产品极富弹性且具有振动抗性。
These experiments, including the pioneering work of Miller and Urey, have successfully produced organic monomers including amino acids, simple sugars, and nucleic acid bases.
这些实验包括米勒等早期所做工作，成功地产出了有机单体，包括氨基酸，单糖，核酸碱基。
Silicone tubing also has limitations in chemical resistance to fluids like concentrated acids or bases, organic solvents, or oils.
硅管还在耐化学喜欢浓酸或碱液体限制，有机溶剂或油。
Expatiating on Lewis acids and bases of generalization, Hard and Soft of acids and bases reaction rule, classification, scaling of HSAB and its explanation of theory.
阐述离子和化合物的广义酸碱分类，软硬酸碱反应规则，软硬酸碱的硬度定量标度和理论解释。
Reading the Clues: Acids or Bases?
解读线索：酸，还是碱？
The quantitative scale of the hardness-softness of acids and bases is an important problem yet to be solved in the study of the principles of hard and soft acids and bases.
酸碱软硬度的定量标度是软硬酸碱原则研究中有待解决的重要课题。
Biogenic amines are organic bases with low molecular weight. They can be expected in all foods that contain proteins or free amino acids.
生物胺是低分子量有机碱，存在于蛋白质丰富的食品尤其是发酵食品中。
This study covered the change of the mechanical properties of the starch gel due to the addition of saccharides, inorganic salts, acids or bases and monoglyceride before the starch gel was formed.
淀粉凝胶的力学性能因糖、无机盐、酸碱、单甘酯等的加入用来改善食品风味和口感的物质而发生变化。
The hard and soft acids and bases theory (HSAB) and its application in the field of corrosion inhibitor were systemically reviewed in this paper.
较系统地综述了软硬酸碱理论及其该理论在缓蚀剂研究领域中的应用。
Most drugs are weak organic acids or bases, existing in un-ionized and ionized forms in an aqueous environment.
多数药物是弱有机酸或弱有机碱药物，他们以非解离或解离型态存在于水性环境中。
A new procedure of potentiometric acid-base titration and curve fitting is described for determining very weak acids and bases.
提出测定极弱酸极弱碱的电位酸碱滴定拟合方法。
Excellent resistance to acids, bases, and most chemicals.
优秀的耐酸，碱，和大多数化学品。
The plastic disposable cuvettes can be used with most polar organic solvents, as well as acids and bases.
塑料通用试管可以使用最常用的有机溶剂，比如酸和碱。
Acids and Bases: Theyre Everywhere!
酸和碱：它们无处不在！
Acids and Bases: Theyre Everywhere!
酸和碱：它们无处不在！
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