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.

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

醇脱氢酶:把乙醇转化为 乙醛 的酶.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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%.

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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%.

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