该物质以对羟基苯甲酸为原料，经三步合成。
The substance was synthesized from P-hydroxybenzoic acid through three steps.
本发明与端双羟基官能化遥爪聚合物的制备方法有关。
This invention relates to a method for preparing dihydroxyl-terminated telechelic polymer.
通过4-甲氧基苯甲醛的羰基加成反应合成4-甲氧基-苯基羟基乙酸。
The 4-methoxy-phenylhydroxy-acetic acid was synthesized by the carbonyl addition reaction of 4-methoxybenzaldehyde.
目的是比较不同干燥方法对红花提取物中有效成分羟基红花黄色素A的影响。
The objective was to compare the different dehydrations on contents of Hydroxysafflor yellow A in Carthamus tinctorius L. extracts.
采用酶动力学方法研究了对羟基肉桂酸对酪氨酸酶单酚酶的抑制效应。
The inhibitory effects of 4-hydroxycinnamic acid on the activity of monophenol oxidase in tyrosinase were studied using enzymological kinetic method.
赤芍主要挥发成分为（Z, Z）-9, 12-十八碳二烯酸，正十六碳酸和2-羟基苯甲醛。
The main volatile chemical components of RPR are(Z, Z)-9,12-octadecadienoic acid, n-hexadecanoic acid and 2-hydroxy-benzaldehyde.
制备了用对硝基苯甲酰氯处理的间氯甲酚或3-羟基-4-氯苯酚，并转化为取代的对硝基苯甲酮。
M-chlorocresol or 3-hydroxy-4-chlorophenol on treatment with p-nitrobenzoyl chloride was prepared and conyerted into substituted p-nitrobezyl ketone.
能带弯曲是一种有效杀死病毒的方法，因为这种技术使得电子由紫外线中解脱出来，向前来游荡与水反应产生羟基自由基。
Band bending is an effective way to kill viruses because the technique allows electrons, which were freed by the UV, to travel forward and create hydroxyl radicals by reacting with water.
是什么机制导致月球表面会吸附近来发现的水、羟基和其他矿物质？
What is the mechanism for the adsorption of water, hydroxyl and other minerals recently found on the Moon's surface?
平常添加一点阿尔法羟基酸，使用海藻面膜增强你皮肤的微循环和均匀度。
Add alpha hydroxy acids to your routine, and use a mask with algae to increase microcirculation and even out your skin.
这种被称为再羟基化年代测定法的技术，最近才由曼彻斯特大学和爱丁堡大学的研究员开发出来。
Called rehydroxylation dating, the technique was recently developed by researchers at the University of Manchester and the University of Edinburgh.
制造羟基磷灰石复合螺钉可以简化生产。
Manufacturing the screws out of the hydroxyapatite composite also simplifies production.
一个潜在的不利因素是阿尔法羟基酸“使表皮变薄，更加敏感从而易被阳光灼伤，”但它远不及Retin - A带来的敏感程度，他说。
One potential downside is that alpha-hydroxy acids "thin out the epidermis, making it a little more sensitive to being sunburned," but not nearly as sensitive as it is to Retin-A, he said.
单糖本质上是脂族的多羟基醛和酮，即HOCH2- (CHOH) 2 -CHO和HOCH 2 - (CHOH) n - 1 - C： O - CH 2 OH，分别称为醛糖和酮糖。
The simple sugars monosaccharides0 are basically aliphatic polyhydroxy aldehydes and ketones: HOCH2 - CHOH n-CHO and HOCH2 - CHOOH n-1-C-O-Ch2OH, called "aldoses" and "ketoses," respectively.
最后，大气甲烷与羟基离子发生反应，生成二氧化碳和水。
Eventually, atmospheric methane reacts with hydroxil ions to form CO2 and water.
小小一瓶水的，所富含的美拉托宁和羟基色氨酸(来自火鸡肉的助眠物质)都来自天然原料。
Each bottle is mini-sized and contains all-natural ingredients like melatonin and hydroxytryptophan (the stuff that’s in turkey that makes you drowsy)。
它将点燃固体推进燃料(HTPB，或称羟基封端聚丁二烯)和液体氧化剂(高挥发性过氧化物，HTP)的混合物持续20秒。
It will burn a mixture of solid propellant (HTPB, or hydroxyl-terminated polybutadiene) and liquid oxidiser (high-test peroxide, HTP) for 20 seconds.
羟基是分子式是HO，水分子式是H 2 O，羟基通常是水分子分解后的产物。
Hydroxyl is HO, as opposed to water's H2O, and it is usually the result of water molecules decomposing.
这些羟基会破坏污染分子。
羟基脲是一种抗肿瘤药，也可以用来治疗镰状细胞性贫血。
A cancer drug called hydroxyurea (Droxia, Hydrea) also is used to treat sickle cell anemia.
虽未最终证实，但暂时认为与乳腺癌的发病有关。诸多日用品里都能见到对羟基苯甲酸酯类-化妆品，面霜及任何护肤品。
It hasn't been proven definitively, but has been tentatively linked to breast cancer. You'll notice parabens in a lot of products — makeup, lotions and any body products.
就像镍镉充电电池一样，金属氢化镍电池的阳极是由浸泡在氢氧化钾电解质中的羟基氧化镍制作而成。
As in a NiCad battery, the NiMH's anode is made of nickel oxyhydroxide immersed in an electrolyte of potassium hydroxide.
叔丁基羟基茴香醚(BHA)和二叔丁基对甲酚(BHT)不仅用于保护食品，还被用来保存化妆品和药品中的油脂。
In addition to preserving foods, BHA and BHT are also used to preserve fats and oils in cosmetics and pharmaceuticals.
两岁幼儿吸收（防腐剂）对羟基苯甲酸丙酯和对羟基苯甲酸丁酯类防腐剂的数量可能会产生类雌激素风险，导致内分泌系统障碍。
The amounts that two-year-olds absorb from the [preservative] parabens propylparaben and butylparaben can constitute a risk for oestrogen-like disruptions of the endocrine system.
有证据证明，某些人可能难以代谢叔丁基羟基茴香醚(BHA)和二叔丁基对甲酚(BHT)，导致健康和行为改变。
There is evidence that certain persons may have difficulty metabolizing BHA and BHT, resulting in health and behavior changes.
叔丁基羟基茴香醚(BHA)通常被用来防止脂肪腐臭。
叔丁基羟基茴香醚（BHA）和二叔丁基对甲酚（BHT）的氧化特性和/或代谢产物也许具有致癌性或致瘤性，不过，同样的反应也有可能应对氧化压力。
The oxidative characteristics and/or metabolites of BHA and BHT may contribute to carcinogenicity or tumorigenicity; however the same reactions may combat oxidative stress.
如果其中一个羟基抢断对方的氢原子，它会变成水分子。
If one hydroxyl steals other's hydrogen atom, it will turn into water molecule.
这些化合物能溶于水，并含有游离的半缩醛羟基，所以在碱溶液中能还原银离子和铜离子。
These compounds are soluble in water, and contains the hemiacetal hydroxyl free, so in alkaline solution can reduce silver ions and copper ions.
过氧化氢、臭氧都是比较强的氧化剂，他们都能产生大量的羟基自由基？
Hydrogen or ozone is one of the most strongest oxidants, because they can generate much of hydroxyl radical?
应用推荐