Ferrous metals
[化] 铁类金属; 铁基金属; 黑色金属; 铁三素组(指铁钴镍)
🧩 词语组成解析
五金
🗣️ 情景例句
They're going to love it.
他们会喜欢的。
You are younger than I am.
你比我年轻。
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。