The material is readily prepared by reaction of formaldehyde and hydrazine.这种物质很容易由甲醛和肼反应而得到.Formaldehyde slowly inactivates many viruses.甲醛能慢慢使多种病毒失去活性.Sulfur dioxide and formaldehyde both produce irritation.二氧化硫和甲醛都可产生...
The carbon microfiltration membranes were prepared by pyrolysis of a home - made thermosetting phenol - formaldehyde ( PF ) resin .实验合成了球形热固性 酚醛树脂 微粒,并以此为原料制备了微滤炭膜.The preparation and property of urea - formaldehyde resi...
I made the acquaintance of the well - known adventuress.我认识了大名鼎鼎的女冒险家.And was she an adventuress like the Empress Dowager Yehonala?江青是否像慈禧一样的人?The principal story is about a fast - living adventuress with an obsession wi...
I have no vindictive feelings about it.我对此没有恶意。...a vindictive woman desperate for revenge against the man who loved and left her.不顾一切企图报复那个对自己始乱终弃的男人的女子I don't like Kevin — he's got a nasty vindictive streak i...