selectivity for segmental transport 分段运输的选择性
Active transport: This process is characterized by selectivity and saturability and requires energy expenditure by the cell.
主动转运这种转运过程的特征是选择性和饱和性，需要细胞的能量消耗。
Experimental results showed the advantages of liquid membranes: rapid rate of uranium transport, high efficiency of extraction, high selectivity and good stability.
结果表明，此乳状液膜体系对铀具有迁移速度快，提取效率高，选择性和稳定性好的优点。
This method opens a route for better energy selectivity in electron transport measurements through organic interfaces.
这个结果为有机界面电子输运测量提供了一种更好的能级选择方法。
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