Professor Orr has developed interesting ways of tagging chemical molecules using existing laboratory lasers.奥尔教授发明了用现有实验室激光设备给化学分子做记号的种种有趣的办法。On the basis cash possession is calculated after using net cash flow analysis ...
After the preliminary selection of Kan , we get 29 anti - Kan regenerated plantlets.经卡那霉素(Kan)的初步筛选, 获得了29株 抗 Kan的再生植株.This paper reports the organ culture and plantlets regeneration of Begonia President - Carnot.本文叙述竹节秋...
He was grinning proudly, delighted with his achievements.他为自己的成就感到喜悦, 自豪地咧着嘴笑。...a mass of grinning teenage faces.一张张少年的笑脸He was grinning proudly,delighted with his achievements.他为自己的成就感到喜悦,自豪地咧着嘴笑。He was grinning widely...