 |
| English | Russian |
| speculum metal | металлотражатель (a mixture of around two-thirds copper and one-third tin making a white brittle alloy that can be polished to make a highly-reflective surface) |
|
| English | Russian |
| speculum metal | металлотражатель (a mixture of around two-thirds copper and one-third tin making a white brittle alloy that can be polished to make a highly-reflective surface) |