The refractory insulating bricks were produced , taking alumina, soft clay, cyanite al as raw materials. 以工业氧化铝 、 结合粘土 、 蓝晶石等为原料,应用聚苯乙烯球烧先注和可塑成形法研制成功了耐火隔热砖.
他将文件叠起来，塞进自己的书桌抽屉里。He folded the papers and stuck them in his desk drawer.他的书桌上有大堆的书籍和文件。On his desk is a mass of books and papers.管家迅速来到牧师的书桌前接电话。The housekeeper moved smartly to the Vicar's desk to answer the call...
You never even mentioned that your wife had had the baby!你从来没有提起过你的妻子生了那个孩子！The letter mentioned my great-aunt and uncle only incidentally.信中仅附带提到了我的姑奶奶和叔叔。I may not have mentioned it to her...我可能没跟她提过这件事。His appointment...