Limonene needed in recycling foamed polystyrene was extracted from the ear of schizonepeta tenuifolia using ligroin.本文研究从荆芥穗中提取回收聚苯乙烯所需的柠檬烯,其方法是溶剂萃取....
It's a common problem, the one I'm asked about most when I'm on the lecture circuit.这问题很常见，我在巡回讲演时被问得最多的就是这个问题。The lecture was given under the auspices of the Academy of Sciences.这次报告会是由科学院主办的.After his le...
There was one caveat: he was not to enter into a merger or otherwise weaken the Roche family's control of the firm.有一点需要预先声明：他不得参与合并，或以其他方式削弱罗奇家族对该公司的控制。A racing injury forced Stephen Roche to pull out.一次比赛中的受伤使斯蒂芬·...
Katie Moore took the ladies' side-saddle award.凯蒂·穆尔获得了最佳女侧骑手奖。Later that day I was horsing around with Katie when she accidentally stuck her finger in my eye.那天晚些时候，我正和凯蒂一起胡闹时，她不小心用手指戳到了我的一只眼睛。...a famous country s...