Only a skeleton staff remains to show anyone interested around the site.只有一小部分必需的工作人员留在那里，带有兴趣的人参观遗址。But by the fifth year of restoration, the Edwards hairstreak butterfly was everywhere on the site.到了重建后的第五年, 爱德华兹细纹蝶已经在...
This activator is acyl amine - the hafnium activator that ether is a foundation.该催化剂为酰胺 - 醚为基础的铪催化剂.Microbial transglutaminase is a kind of enzyme that can catalyze transferring acyl.微生物谷氨酰胺转胺酶(MTG)是一种催化酰基转移反应的酶.R 2 is H...
Pigeons fluttered in and out, cooing gently.鸽子们低声咕咕地叫着，扑扇着翅膀飞进飞出。the sound of pigeons cooing鸽子咕咕的叫声The boy frightened away the pigeons from the roof.那男孩把屋顶上的鸽子吓飞了....
结果: 在5ppm的富锗培养基上培养的GSC中锗的转化率最高 ( 1118% ).RESULTS: GSC contains the highest ( 11.18 % ) germanium in 5 ppm enriched germanium MS cultrue medium.在不改变原工艺流程的基础上提出了富集锗的相关措施.The authors have proposed some measures related to g...