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...
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...
用法: 在清洁和拍纯露后,取适量涂抹在面部,轻拍至吸收即可.Direction: Apply an amount of essence to skin after clean.用法: 洁肤后,取适量喷于面部,轻拍至吸收为止.Usage: Spray to the face after rinse and gently pat until absorption.使用方法: 取本品适量于脸上, 轻拍至吸收即可.Usage: Apply pr...
C : Hola Paula . Pem í teme presentarte a mi amigo Juan.你好,宝拉, 我给你介绍一位我的朋友娟.Paseando por la calle, he encontrado a un viejo amigo.我在街上散步时遇见了一位老朋友.Your time will be come, amigo.你的时代会到来的, 朋友....
That part of Castle Walk is not thickly vegetated.卡斯尔步行街那一地段的植被不是很厚密。I didn't want to do anything, I just sat at home and vegetated. I became a total zombie.我什么也不想做，就是呆坐在家里，过着百无聊赖的生活。我完全变成了行尸走肉。The bacterial growth ...
柏林市内的波兰市场因为被认为有碍观瞻而关闭了。The Polish market in Berlin was considered unsightly and shut down.议员们向市长提出了市内停车的问题.The councillors put the problem of downtown parking before the mayor.我们交纳的税部分用于市内各公园的保养.Our taxes help pay for th...