碳化植物残余通常是丰富的.Carbonized plant remains are commonly abundant.它是阳光与大气中的碳化氢和氧化氮作用的结果.It is the result of sunlight reacting with hydrocarbons and nitrogen oxides in the atmosphere.叙述了PI原丝的碳化和石墨化过程.The carbonization and the g...
This change is neatly illustrated by what has happened to the Arab League...这种变化鲜明地体现在阿拉伯联盟所发生的事件上。...a richly illustrated introduction to the art of the Islamic world.对伊斯兰国家艺术的配有精美插图的介绍Secondary uranium minerals are ill...
他坐在一张放有6个文件夹的桌子后面。He sat behind a table on which were half a dozen files.她所有的信件都整齐地放在文件夹中。All her letters were carefully filed away in folders.职员们随意地将文件塞进文件夹里。Clerks bundled papers into files willy-nilly....