将“PCR"翻译成中文

Two of these three cases were asymptomatic and all three tested weakly positive by PCR.

三位病例中有两例没有症状,对所有三位病例所做的聚合酶链反应检测均呈弱阳性。

We've been doing that since, you know, since we started PCR

我们已经在做了,因为我们启动了聚合酶链式反应 (PCR)

No PCRs have been received for activities within national phase‐out plans which are still ongoing

对于仍然在进行中的国家逐步淘汰计划中的活动,没有收到任何项目完成报告。