Simpsonite
[矿]钽铝石
🗣️ 情景例句
Would you like something to drink?
你们要点什么饮料吗？
I hope so.
我希望是这样。
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。