- 12 Tháng hai 2019
- 2,154
- 1,938
- 321
- Hà Nội
- Trường THPT chuyên Hà Nội-Amsterdam
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
"Transition metals have many uses in our society. Iron is used for steel; copper for electrical wiring and water pipes; titanium for paint; silver for photographic paper; manganese, chromium, vanadium, and coblat as additives to steel; platinum for industrial and automotive catalysts; and so on."
Ở đây phần "and so on" có nghĩa là gì ạ?
Ở đây phần "and so on" có nghĩa là gì ạ?