The lag of policy is an unbalanced status in the process of policy. In terms of the need for policy, policy lagging is an objective law.

政策滞后是政策过程中一种不均衡的状态，相对于政策需求而言，政策滞后是一条客观规律。

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Results the results showed that alginate and calcium chloride concentrations and polyelectrolyte layers markedly affected the lag time of pulsed release and the releasing speed after lagging.

结果海藻酸钠浓度、氯化钙浓度、聚电解质包衣层数影响脉冲释放时滞以及时滞后释放速度。

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