处于液态的叠氮酸是很危险的.Hydrazoic acid in liquid form is very dangerous.结果表明添加叠氮酸酯是一种提高硝胺改性双基推进剂燃速与能量的切实可行途径.The results show that PDADN can increase burning rate and energy of nitramine modified propellant....
介绍完毕后她就登上讲台.She was introduced and stepped up to the podium.老师叫大宝走上讲台.The teacher called Dabao to step up the platform.在走上讲台讲演之前,我要把我的思绪整理一下.I must put my thoughts together before I go on the platform....
Bacchus, like so many grapes planted for still wines in England, is an early - maturing German variety.Bacchus和英格兰这么多为无泡葡萄酒种植的葡萄一样, 是早熟的德国品种.Soon the attendants returned who had been dispatched to seize Bacchus.不久,派出去抓巴克...