Aim To investigate the constituents of flavonoids from the stings of Gleditsia sinensis L.目的研究中药材皂角刺中黄酮类化合物化学成分.In this paper, the chemical utilization of Gleditsia sinensis seeds, pods and stings has been discribled.介绍了...
有一颗小行星可能会与地球发生碰撞。There is an asteroid on a collision course with the Earth.小行星, 亦称为 “ 小型行星 ”, 在外太空中不计其数.Asteroids, also known as " minor planets ", are numerous in the outer space.最大的小行星是谷神星,体积约为月球的1/4.The largest astero...
anthrax bacillus炭疽杆菌Bacillus cereus, coli and Salmonella accounted for 21.其它依次是蜡样芽胞杆菌 、 致泻性大肠杆菌和沙门菌,分别占21.A kind of bacillus has shown significant ability to decompose apatite.确认了一种芽孢杆菌具有显著的分解磷灰石的能力.The dominant bacteria...