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....
These incidents suggest the peace in Northern Ireland is still brittle.这些事件表明北爱尔兰的和平仍然很脆弱。Word has been spreading fast of the incidents on the streets.有关街头骚乱的消息迅速传播开来。Incidents of this type cause irreparable damage to re...
" The more , the better . " , as Han Xin said about the number of troops he could command.韩信将兵, 多多益善." The Capital Gazatte " , first published in the Han Dynasty ( 206 B.C. - 220 A . D . ), was the earliest newspaper in ...