铜棒, Copper rod

铜管, Copper tubing

镝箔, Dysprosium foil

镝棒, Dysprosium rod

铒箔, Erbium foil

钆粉, Gadolinium powder

钆箔, Gadolinium foil

锗片, Germanium pieces

锗棒, Germanium rod

钬箔, Holmium foil