乙醛

One of these, called alcohol dehydrogenase, turns the alcohol molecules into another chemical, acetal dehyde.

其中有一种叫酒精脱氢酶，把酒精分子转化成另一种化学物质，乙醛。

Carbamide reacting with H2SO4 forms aminosulfonic acid. Allantoin is prepared by oxidation of the aqueous solution of glyoxal into glyoxylic acid which is then used to synthesize allantoin.

氨基磺酸的合成是用尿素和发烟硫酸反应；尿囊素的合成是用硝酸氧化乙二醛溶液制得乙醛酸后，再加入氢氧化钙和氯化钙，使乙醛酸以钙盐形式析出，然后在盐酸介质中与尿素缩合而成。

Since 2002, Institute of Coal Chemistry, Chinese Academy of Sciences has been developing a new technology to prepare high-purity glyoxylic acid by maleic anhydride ozonation, which has been completed, and now the research of the downstream products of glyoxylic acid including vanillin, heliotropin and the substituted mandelic acid is underway.

中科院山西煤化所从2002年开始进行研究，完成顺酐臭氧化法制备高纯乙醛酸新技术工艺的开发，现正进行乙醛酸下游产品香兰素、洋茉莉醛、取代扁桃酸的技术研究。

A projectile with ground-air rocket by the burst of TNT has been designed for dispersing metaldehyde into the clouds on a large scale.

为了地面利用小火箭有效地对云大量撒播介乙醛，我们设计了一种用 TNT 分散介乙醛的药桂。

The selectivity of phenylacetaldehyde is increased when Br〓nsted acidity is getting stronger. The selectivity of benzaldehyde can be increased by increasing the amount of extraframework titanium species.

分子筛的B酸中心强度对产物分布有着显著的影响，B酸越强，苯乙醛的选择性越高，B酸位是催化环氧苯乙烷定向重排生成苯乙醛的催化活性中心；非骨架钛物种的增加有利于苯甲醛的生成。

While the four steps to convert aldehyde- 25 to ester- 29 did not require major modification, vis-à-vis the first-generation synthetic sequence, significant changes were made to the final two steps, that is the conversion of aldehyde- 29 to lactone- 6 , the eastern hemisphere subtarget.

而四个步骤将乙醛25酯-29不需要大修改，相对于第一代合成序列，作了重大修改的最后两个步骤，即把乙醛29内酯6、subtarget东半球。

Both 2-hydroxyethyl and oxametallacycle species tautomerize to acetaldehyde, around 210 K and above 250 K, respectively. Some of that acetaldehyde desorbs while the rest decomposes to hydrogen and carbon monoxide.

羟乙基和氧金属环都会发生异构，分别在210 K和250 K生成乙醛，这些乙醛一部分从表面脱出，其余的部分发生分解反应产生氢气、水和一氧化碳。

Second, the drug disulfiram, which causes acetaldehyde to accumulate in the body, discourages alcoholics from drinking by causing nausea, vomiting, and other severe alcohol flush reaction symptoms.

第二个是，二硫龙作用可以导致乙醛在人体内的积存，乙醛可以减轻人在饮酒后发生的恶心、呕吐和其他由酒精引起的症状反应。

After the modification, the acetaldehyde consumption and energy consumption were reduced by about 10% respectively, and install time of the towers was only about 1/5 of the float valve towers with cutting 60% of the cost.

采用JKB-125Y型板波纹填料塔代替浮阀塔，对乙醛分馏塔和酒精回收塔进行改造，乙醛单耗及能耗可降低10％，塔设备的投资可节约60％，塔设备安装时间可缩短至原来的1/5。

2The top sample of acetaldehyde column is 98% acetaldehyde production. Thebottom sample is the mixture of ketone and alcohol.

乙醛塔：塔顶得到纯度为 98％的乙醛产品，塔釜为醇﹑酮混合物。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。