positive feeder 中文意思是什麼
positive feeder
解釋
正極饋電線-
Eg cells of the 2th and 4th passage were akp ( alkaline phosphate ) positive. when cultured on degenerated feeder layers or in suspension, eg c ells formed embryoid bodies ( ebs ) in vitro
當eg細胞脫離飼養層懸浮培養，或在衰老的飼養層上延遲培養時，發現eg細胞或單個存在，或聚集成團，形成類似於早期胚胎的囊狀胚體結構 -
The third, the paper analyses and expatiates three mode of speed regulating which are speed negative feedback, voltage negative feedback and voltage negative feedback plus cuttent positive feedback and designs a speed regulating control system adopting the mode of voltage negative feedback plus cuttent positive feedback. at the same time we optimize the speed regulating system using the appraisal software of the performance of wire feeder
再次，從控制論的角度對轉速負反饋、電壓負反饋、電壓負反饋配合電流正反饋等三種轉速調節方式進行了分析論述，採用電樞電壓負反饋配合電流正反饋方式設計了送絲機調速控制系統，並採用送絲機性能評估軟體對調速系統進行了優化。 -
( 7 ) in order to establish a feeeder - free system in porcine eg culture, we put pgcs on sto feeder layer, on sto extracellular matrix or on 0. 1 % gelatin in brl - cm, and the results showed that when pgcs cultured on sto feeder, the brl - cm had a positive effect on keeping the undifferent state of eg colonies
（ 7 ）對非飼養層培養系統培養豬pgc進行了初步探索。實驗結果證明，以sto為飼養層，培養液中加條件培養基對豬eg細胞保持不分化狀態有積極作用，但培養板底鋪有sto基質或明膠，即使用條件培養基也沒有獲得典型的eg集落。
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