乙醛

This article makes the comprehensive analysis on the organic contaminants in acid wastewater in the acetaldehyde unit by means of SPME, GC／MS, GC and volumetric analysis, and tries to find possibility of recovery of acetic acid.

采用SPME、GC／MS、GC及容量分析技术对乙醛装置酸性废水中有机污染物进行了综合分析，探讨了回收乙酸的可行性。

The synthetic organic chemicals, such as phenol, m cresol, phloroglucinol, phenylamine, 3,5 xylenol, p tertiary butyl phenol, nitrobenzene, tert butanol and chloral were oxidized in supercritical water system.

研究了超临界水氧化系统中合成有机化学品，如酚、间苯三酚、对叔丁基酚、间甲酚、3 ，5-二甲酚、苯胺、硝基苯、叔丁醇、三氯乙醛等的氧化作用。

The results also indicated a low production of acetic acid, acetoin and ethyl acetate, and high amounts of amyl alcohols in all of the ciders.

结果在全部萍果汁也表明了乙酸、乙醛和乙酸乙酯旳低产量和大量产生旳戊基乙醇。

The catabolites of acetoin metabolism such as 2,3-butanediol and acetaldehyde as well as other carbohydrates including galactose, lactose, and glycerol did not affect the expression of Paco and PacoK, whereas maltose stimulates the expression of PacoK at 210 min.

其他的乙醯甲基甲醇代谢物如2， 3-丁二醇与乙醛，以及其他糖类包括半乳糖，乳糖和甘油对acoABCD及acoK启动区的表现能力并无明显影响，而在210分钟时，麦芽糖则可刺激acoK启动区的表现。

The bio-oil was composed of acetic acid, hydroxyacetaldehy, acetol, levoglucosan, furaldehyde, and a small quantity of phenols.

结果表明，热解温度为460~520℃时热解油产率最大，主要有醋酸、羟基乙醛、羟基丙酮、左旋葡聚糖、糠醛，油热值为17.0MJ.kg-1；热解气主要为CO2和CO，还含有少量H2、CH4和C2~C4的烯烃。

This article describes the deoxidizing property of several new deoxidants such as carbohydrazine,acetaldoxime,acetoxime, HErA and NaErA,under different conditions.

主要论述在不同条件下，碳酰肼、乙醛肟、丙酮肟、异抗坏血酸、异抗坏血酸钠等新型除氧剂的除氧性能，并与传统除氧剂肼对照进行了试验研究，其结果表明以上几种新型除氧剂的除氧性能皆优于肼。

The study found gaseous aliphatic aldehydes , which are carcinogenic and mutagenic, in incense smoke.

研究证明香烟中的气态的〈化〉脂肪族的醛，乙醛，是致癌物和诱导有机体突变的物质。

Polyacetaldehyde may exist in atactic , syndiotactic and isotactic forms.

聚乙醛可以以无规，间同和全同形式存在。

Polyacetadehyde may exist in atactic , syndiotactic and isotactic forms.

聚乙醛它和聚烯烃一样，可以以无规，间同和全同形式存在。

2S, 3S -2-methyl -3-benzoxyl butanal was obtained from cis-2-butene and acetaldehyde in 56. 3％ yield through Brown Crotylation, oxidization, etc.

以顺-2-丁烯、乙醛为原料，经Brown Crotylation反应、氧化反应等，得到了（2S，3S）-2-甲基-3-苄氧基丁醛，收率为56.3％。

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。