Pyrolysis and liquification of polypropylene(PP) were studied by using molten ZnCl2 as heat carrier.
以熔融氯化锌作为热载体,对聚丙烯(PP)
热解液化进行研究。
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It was once reported that the treats became popular during the Yuan dynasty when the cakes were reportedly used as paywall, essentially a vessel to deliver secret notes to assist Han Chinese in overthrowing the Mongolian rulers at the time.
史载元朝时期,月饼承担起了载体的作用,当时人们利用月饼传递起义密信,帮助汉人推翻了蒙古的统治。
际名牌英语简介