While subclass 1c has no effect on ERP, 1a prolongs and 1b shortens ERP respectively .

1c亚类对ERP无影响，1a延长ERP，1b缩短ERP。

So that leaves extended ERP, or enterprise resource planning as the only thing to comment on for this list of services.

所以，现在我们只介绍ERP——企业资源规划。

However, for mandatory uses, such as for ERP systems, the use of the technology is obvious.

然而，对于强制性用途， 例如 ERP 系统，该技术的使用是显而易见的。

Changes in ERP may have different outcomes for different types of arrhythmias.

ERP的变化可能会对不同类型的心律失常产生不同的结果。

These subclasses differ in the strength of sodium channel blockage and in their effect on the duration of action potentials and the effective refractory period the erp.

这些亚类在抑制钠通道的强度、对动作电位持续时间和有效不应期的影响上各有不同。