Acetaldehyde almost exists ubiquitously and is harmful to people.

Perfume Features: The main tone of acetaldehyde rose floral notes.

香水特色: 以玫瑰为主调的乙醛花香调.

Alcohol dehydrogenase An enzyme that converts ethanol into acetaldehyde ( ethanal ).

醇脱氢酶:把乙醇转化为 乙醛 的酶.

During alcoholic fermentation acetaldehyde acts as a hydrogen acceptor instead of oxygen.

在这个过程中乙醛取代了氧作为氢的受体.

The corresponding reaction of acetaldehyde is subject to general base catalysis.

乙醛相应的反应服从广义的碱催化.

This paper discussed three methods of producting vinyl etherspreparation from acetylene, dehydrohalogenation and acetals.

论述了乙烯基醚类化合物的三种主要制备方法乙炔法 、 脱卤化氢法和缩醛热分解法.

This paper reviewed the research development and synthesis of acetals and ketal flavors.

综述了缩醛(酮)反应的研究进展,重点介绍了缩醛(酮)类香料的合成方法.

Sorbitol acetals is the most one kind of the nucleating agents for polypropylene crystallization.

山梨醇缩醛是最重要的聚丙烯成核剂之一.

Using the same catalyst in THF acetals could be converted to the corresponding carbonyl compounds efficiently.

而在四氢呋喃和水的混合溶剂中,使用同样的催化剂,则可以高效率地实现上述反应的逆转化过程.

The hydroxyl groups can be changed into esters , ethers , acetals and ketals, etc.

最常用的羟基保护基可归纳为三类:酯类 、 醚类和缩醛或缩酮类.

Eight acetals ( Ketals ) were synthesized under the optimal conditions.

在最佳条件下,合成了八个缩醛 ( 酮 ) 化合物.

The yields of other cyclic acetals were between 62.

并在此条件下合成了多种环缩醛,收率62.

The proposed labeling changes represent the latest headache for acetaminophen.

标记改进提案列举了最近由扑热息痛引起的大麻烦.

Acetaminophen, also called paracetamol Tylenol, Excedrin and other products that do not require a doctor's prescription.

醋氨酚又称为扑热息痛, 多用于泰诺、埃克塞德林以及其他一些无须医生处方的药物中.

AsprinAspirin, The sidomelfen acetaminophen and Ivenpoven ibuprofen can all be used to reduce pain and fever.

阿斯匹林, 醋氨酚和布洛芬都可以用于止痛和退烧.

A trademark used a brand of acetaminophen.

使用注册商标的,并应当标明“注册商标”或者注册标记.

Taking too much acetaminophen can cause liver damage and even death.

服用太多的醋氨酚会引起肝损伤,甚至死亡.

The committee was a specially especially concerned about prescription drugs that combine acetaminophen with stronger painkillers.

委员会特别考虑到含有醋氨酚的处方药有很好的止痛作用.

The committee committee was specially especially about prescription drugs that combine acetaminophen with stronger painkillers.

委员会还特别关注含有醋安芬的强力止痛药物的处方药.

If a mom took acetaminophen for two to four days, the risk went up 78 %.

如果一个妈妈了使用乙酰氨基酚为两天到四天, 风险上升了78%.

The relative bioavailability of acetaminophen and codeine was 99.97 % ± s 10.55 % and 100.73 % ± s 7.85 % respectively.

扑热息痛和可待因的相对生物度分别为99.97%±s10.55%,100.73%±s7.85%.