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....
研究了偕二金属有机试剂3与氯化三烷基锡和碘的非对映选择性反应.The diastereoselective reactions of organogembismetallic reagent 3 with trialkyl tin chloride and iodine were studied....
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 ...