I. The basic principle of membrane separation oxygen generationIt has been more than 100 years since the study on the mass transfer process of gas in ...
The cricket dared not go out these days because it found a strange beast in the forest. It said to its partners, "you 'd better not go out. I...
Liquefied air when China was in a factory in Shandong province, the factory reported that for a long time, the 21000Nm 3/h air separation plant and th...
The little boy asked his father, "do fathers know more than sons ?"Dad answered, "of course !"The little boy asked, "who inve...
A: "The new neighbor is so hateful, yesterdayIn the Midnight, in the dead of night, I ran to ring my doorbell fiercely ."B: "Indeed hat...
On the occasion of the coming of the Dragon Boat Festival, in order to carry forward the national spirit, inherit the traditional Chinese festivals, l...
A psychologist who enjoys a high reputation in the medical field said when he was about to retire: The most useful teacher to help himself change his ...
When the beggar went to Little Wang's house to beg, he gave him ten yuan. The next day, the beggar went again and gave him another ten yuan, which...
PDMS is a three-dimensional factory design system developed by British AVEVA company, which was officially released in 1976. It has an independent dat...
A shy boy studied by himself in the classroom and saw a girl he liked very much. Seeing that the girl was leaving after reading the book, the shy boy ...
A fox was going to fight with a lion, but the lion refused decisively. The Fox said, "Are you scared ?" The lion said, "If I promise yo...
