recertification

Thus, there's no need to re-commission field loops or perform time-consuming safety system recertification .

因此，没有必要重新布置回路或是为耗时的安全系统重新换发新证。

Brief, focused chapters make this an ideal tool for board examinations and recertification as well as preparation before surgery.

集中章的摘要使这一理想工具给板检查和在诊所之前换发新证和准备。