CONCLUSION: in a given column volume of gelatin, the quantity of purified fibronectin was closely related with the plasma retention time in column and the total loading amount of plasma.

结论在明胶亲和柱体积不变的条件下，制备纤维蛋白结合素的量与血浆加样量、血浆在柱内停留时间密切相关。

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You're going to have to think about measuring annual and total contract values, payments and declines, monthly and annual recurring revenue, and relationship retention.

你必须估量年均和总合约价值、付款与下降、月度与年均经常性收入，并设法留住用户。

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Phosphorus utilization efficiency and phosphorus retention coefficient attained optimal levels at 0.89% and 1.26% total dietary phosphorus by analysis, respectively.

分析发现，饲料总磷含量为0.89%和1.26%时，磷的利用效率和磷沉积系数分别达到最佳水平。

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