The zoo keeper is feeding the animals.动物园饲养人在喂动物.Set includes animals, zoo keeper, and large building bricks.套装中包括动物, 动物园管理员, 大积木.The zoo keeper simply gave the hawk a snake.动物园管理员给老鹰一条蛇....
The geomagnetic field varies continuously .地磁场不断地发生变化。On advertisement: The day is geomagnetic, can you treat heart disease really?广告上的: 天地磁, 真的能治疗心脏病?The data of international geomagnetic reference field are widely used...
介绍了一种新的测定亚硝酸根的荧光探针分子 ——— 3- ( 4-氨基苯基 ) 中氮茚-1-羧酸甲酯 ( API ).A novel fluorescence probe, 3 - ( 4 - aminophenyl ) indolizine - 1 - carboxymethyle ( API ) has been developed for the determination of trace nitrite.介绍了一种新的测定亚硝酸...