Biodegradability of the nitrocellulose with diphenylamine was investigated in this paper.研究了含二苯胺硝化棉的生物降解特性.The reaction of CIr ( NO ) Cl 5 - and diphenylamine has been investigated by spectrophotometric method.本文主要用分光光度法...
We are exposed to the most calamitous accidents.我们遭受着极大的灾难.Light reveals the subtle alteration of things, the sly or calamitous impermanence or mortal life.事物的细微变动, 人生的狡猾,倏忽无常,一一都在光中显露出来.When central banks put themselves...