ITQ - 27 is stable to calcination in air , absorbs hydrocarbons , and is catalytically active for hydrocarbon conversion.ITQ-27对于在空气中煅烧而言是稳定的, 可以吸附烃类,以及对烃转化具有催化活性.Any of three gaseous isomeric ethylene hydrocarbons , C 4...
Hydrocarbons ( HC ), like carbon monoxide, represent unburned and wasted fuel.碳氢化合物 ( HC ) 像一氧化碳一样, 为未燃尽的和被浪费掉的燃料.With this restricted frequency range it is not applicable to hydrocarbons.这个较紧缩的频率范围不适用于烃类.These compounds...
The slow-worm is in fact not a snake but a legless lizard.蛇蜥其实不是蛇,而是无脚的蜥蜴。Why were grown-ups always so stuffy and slow to recognize good ideas?为什么成年人总是那么一本正经,对好点子反应那么迟缓呢?The lorry was travelling at 20mph in the slow lane...