The incorporation of Ascorbic acid with the enzyme, adds hydroxyl group on proline residue in collagen.

酸与酶的结合，使胶原中的脯氨酸残基上增加了羟基。

Just two or three carbon atoms, a hydroxyl group, and some hydrogens.

只有两个或三个碳原、一个羟基以及一些氢原。

And what's left are molecules with four carbons, each of which is saturated, and attached to a hydroxyl group.

剩下的是含四个碳的，个都是饱和的，依附在羟基上。

Its molecules come in long chains, called polymers, and on each end there's a hydrogen-oxygen pair, called a hydroxyl group.

他的拥有很长的链叫做高聚合物，一个的末端都有一个氢氧基对，叫做羟基组。

Sometimes a hydroxyl group from one molecule is happy to join up with a hydrogen from another, forming water.

有时，一个中的羟基很乐意与另一个中的氢结合， 形成水。

And what’s left are molecules with four carbons, each of which is saturated, and attached to a hydroxyl group.

剩下的是有四个碳的，个碳都是饱和的，并连接到一个羟基上。

It reacts with HOPDMS in such a way that it breaks off a hydroxyl group from one end of each chain, so that two chains can join together!

它与 HOPDMS 产生反应，通过打断一个链接末尾的羟基组，使得两个链接可以结合在一起！

Carboxylic acids are a type of organic compound characterized by a carbon (C) atom doubly bonded to an oxygen (O) atom and singly bonded to a hydroxyl group (-OH) .

羧酸是一种有机化合物，其特征是一个碳（C）原与一个氧（O）原双键结合，并与一个羟基（-OH）单键结合。

Beta hydroxybutyric acid on the other hand, even though it's still one of the ketone bodies, isn't technically a ketoacid since its ketone group has been reduced to a hydroxyl group.

而β-羟基丁酸虽说也是酮体，但却不是酮酸，因为它的酮基团被还原成了羟基。

If you were paying attention, you learned that alcohols are organic compounds with hydroxyl groups, if you dehydrogenate them, the hydroxyl converts to a carbonyl and they become dehydrogenated alcohols or aldehydes.

如果你留心的话，你就会知道醇是带有羟基的有机化合物， 如果你将它们脱氢， 羟基就会转化为羰基， 它们就会变成脱氢的醇或醛。

Technically speaking, an alcohol is any compound that contains a hydrogen-oxygen pair, known as a hydroxyl group, that's bound to an atom of carbon that's saturated, meaning all of its electrons are bound to something else.

严格说来，含有氢氧化合物的东西都是酒精，也就是我们所熟知的氢氧基，粘着在饱和的碳原上，也就是意味着所有的电都粘着在另外的东西上。

It replaced one of salicylic acid's hydroxyl group — that's an oxygen and hydrogen bonded to a carbon — with an acetyl group, which is two carbons, one double-bonded to an oxygen and the other bonded to three hydrogens.

它用乙酰基取代了水杨酸的一个羟基——氧和氢与碳结合——乙酰基是两个碳，一个与氧双键结合，另一个与三个氢结合。

If it's a six carbon chain with a carboxylic acid on it and an alcohol on one of the other carbons, our name has to do two things: identify that the hydroxyl group is there and identify where it is.

如果它是一个六碳链， 上面有一个羧酸， 另一个碳上有一个醇，我们的名字必须做两件事：确定羟基的存在并确定它的位置。