该词条未找到_海词词典

您要查找的是不是：

Toluene was mononitrated with good para-selectivity in the presence of clays etc. as catalysts and supports. It is found that bentonite is an cheap, efficient and clean catalyst. 粘土等固体催化剂和载体在芳烃甲苯硝化反应中表现出强的对位选择性催化能力和催化活性,皂土等粘土是一种廉价有效的清洁型催化剂。
Evaluation on performances of acrylonitrile waste-gas cleaning catalyst 丙烯腈废气净化催化剂性能评价
Clean clothes and good manners are prepossessing. 清洁的衣服和良好的举止能给人以好感。
Let's clean down the board before we paint it. 让我们在上漆以前把这块板洗干净。
The dentist was cleaning and taking out teeth. 牙科医生正在清洁和拔牙。
It's important for the college freshman to keep his nose clean. 对大学新生而言洁身自好是很重要的。
The offer of a new job provided just the catalyst she needed. 这份新工作正是她所需要转变的契机。
Why is it that I always land up cleaning the bath? 为什麽总是该我来洗刷浴缸?
The research progresses of cleaner catalysts used instead of sulfuric acid in the nitration of aromatic hydrocarbons are reviewed. 综述了国内外有关芳香烃硝化过程中替代硫酸的催化剂的研究进展;
He was busily employed in cleaning his shoes. 他忙著擦鞋。
She is cleaning up the kitchen now. 她现在正在打扫厨房。
She was cleaning the bedroom when he called her. 他给她打电话时她正在打扫卧房。
She is busy cleaning the fowls in the kitchen. 她正在厨房忙著清除家禽的内脏。
We'll give the house a thorough cleaning. 我们要把房子彻底打扫一番。
Cleaning exposed the grain of wood. 清洁使木纹显现可见。
The sparking-plugs need cleaning. 火花塞要清理一下了。
The action of cleaning computer viruses. 清除计算机病毒的动作［过程］。
Mary makes a fetish of her home; she's always cleaning it. 玛丽太看重她的房子了，她老是不停地打扫。
He is surprised to find his room thoroughly clean. 他惊讶得发现他的房间给彻底地打扫了。
I use an oily rag to clean my bike with. 我用沾满油污的碎布擦我的自行车。