芳基取代聚炔及其衍生物呈现出光电磁等许多新颖的性能.Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical , electric, magnetic properties.目的: 建立中药北沙参中聚炔法卡林二醇的薄层扫描测定方法.Objective : To establish TLC scanning method for...
Bulgaria'seconomy has sunk into chaos.保加利亚的经济已陷入了混乱。The pound had sunk 10 per cent against the Schilling.英镑对奥地利先令的比价已经下跌了10％。Pay increases have sunk to around seven per cent.工资增长率已降至7％左右。That wheel has sunk five mil...
The plucky schoolgirl amazed doctors by hanging on to life for nearly two months.这名勇敢的女生坚持不放弃生命近两个月的精神令医生感到震惊。You ever stop to think that maybe I am the plucky comic relief?你就没想过也许我就是那种有勇气的'搞笑救济'?Trivial decisi...