Simple examples of aldehydes are methanal and ethanal (acetaldehyde, CH3CHO).

簡單的醛有甲醛和乙醛（ CH3CHO ）国产三区女同。

Under ultrasonic extraction, comparing the ratio of total alkaloid with 95% ethanal, hloroform, methanol.

用超聲波提取法比較了以95%乙醇、氯仿在线观看AV资源站捆绑、甲醇為溶劑的提取率精品国产亚洲一区二区三区，結(jié)果依次為1.21%、1.57%久久精品国产88久久综合、1.54%亚洲一区欧美日韩。

Results Temperature of extractiont and concentration of ethanal had significant effect on the yield of antidepressive substances from Hypericum perforatum L.

結(jié)果影響從貫葉連翹中提取抗抑郁成分的主要因素是乙醇濃度與提取溫度，貫葉連翹的最佳提取工藝為A4B2C2D1欧美精品91一区二区在线观看，即20倍量的70％乙醇wwwww网站，80℃回流提取2h。

Glyoxal is prepared with waste liquid propellant HNO3-27S and ethanal .

利用報廢的液體推進劑硝酸-27S和乙醛制備乙二醛超碰人人干人人摸人人看。

Xylose isomerase plays an important role in industrial ethanal fuel production from lignocellulosic biomass, thus the study on its conformation, function and site-directed mutagenesis is of important prospect and wide attention.

木糖異構(gòu)在由植物纖維生產(chǎn)酒精工業(yè)中扮演著重要角色亚洲欧美综合图片，對其結(jié)構(gòu)和功能及其改造研究受到廣泛重視，具有重要應(yīng)用前景日本爆乳片在线播放。

ethanal trimer：三聚乙醛

ethanal tetramer四聚乙醛 | ethanal trimer三聚乙醛 | ethanamide乙酰胺

ethanal：乙醛

含甲醛37~40%、甲醇8%的水溶液叫做(2)乙醛: 乙醛(ethanal)是無色的有刺激氣味的低沸點液體,可溶于水丰满少妇一级毛片无码、乙醇和乙醚中,易氧化,易聚合. 乙醛是合成乙酸啪啪啪黄色视频、乙酐、三氯乙醛极品粉嫩午夜福利在线视频、季戊四醇等多種化合物的重要原料. 工業(yè)上由乙炔加水或由乙烯日韩精品爆乳激情在线观看网站免费、乙醇氧化劑制備.

acetaldehyde,ethanal：乙醛

乙醛去氫酶 acetaldehyde dehydrogenase | 乙醛 acetaldehyde; ethanal | 醋氨酚 acetaminophen

ethanal; acetaldehyde：乙醛

發(fā)情;動情(期) estrus; heat | 發(fā)情(期) estrus; oestrus | 乙醛 ethanal; acetaldehyde

ethanal hydrogensulphite：乙醛合亞硫酸氫鹽

ethanal 2,4-dinitrophenylhydrazone 乙醛 2,4-二硝基苯 | ethanal hydrogensulphite 乙醛合亞硫酸氫鹽 | ethanal oxime 乙醛