Pecm
abbr. passive electronic countermeasures 被动电子对抗，无源[消极]电子干扰; Preliminary Engineering Change Memorandum 初步工程更改备忘录（美国空军）; processing element control memory 处理单元控制存储器
🗣️ 情景例句
We are going to celebrate all weekend.
我们整个周末都要进行庆祝。
What time?
什么时候？
I must definitely get that fellow posted. '
我一定要把那个家伙打发走。”