常常是用离心法分段收集沉淀的.Precipitates are usually collected by centrifugation at intervals.它可以用离心法分离.This can be separated by centrifugation.结论: 密度梯度离心法分离获得的人胚胎骨髓间充质干细胞纯度高.Conclusion: High purity of MSC can be obtained by density ...
There are documented cases of wild tortoises that exhibit pyramiding - they live near soybean fields ( Highfield ).这里有些野外龟类隆背的证据 --- 他们生活在大豆作物区附近 ( 高地 ).The ore - a bimodal rock association and exhibit assembly character...
The baker is kneading dough.那位面包师在揉面.She was kneading a lumpen mass of dough.她正揉着一大块面团。She was kneading a lumpen mass of dough...她正揉着一大块面团。Just how much kneading is required depends on the sort of flour.需要揉多久取决于用哪种面。...
The car was left a mess of twisted metal.车子成了一堆扭曲的金属。Rupert Moon is out of today's session with a twisted knee.鲁珀特·穆恩扭伤了膝盖，无法参加今天的训练。She had twisted his arm to get him to invite her.她说服他向自己发出邀请。...
He's a retired Lieutenant Colonel and a bit of a martinet.他是个退役中校，有点军人作风。Our dean is an understanding counselor, not a martinet.我们的教务长是一位善解人意的好顾问, 而非厉行严格纪律者.Thomson , A . J . and A . V. Martinet . 1986 . A Practical...