Hn2
[化] 氮芥; 二·甲基胺; 二氯乙基·甲基胺
🗣️ 情景例句
I'll call you again later, OK?
我以后再打给你，好吗？
I had a great vision.
我看到了惊人的景象。
The second marks the arrival of transverse vibrations which travel more slowly and arrive several minutes after the first.
然后记录下的是横向波的到达，横向波比纵向波传播得慢，在纵向波到达几分钟后才能到达。