ores造句

an intensely radioactive metallic element that occurs in minute amounts in uranium ores.

While the Great Dyke and its metal ores are products of geologic processes from the deep past, more recent events have also left their mark on the landscape.

It is produced from the burning of fossil fuels (coal and oil) and the smelting of mineral ores that contain sulfur.

a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite).