铜棒, Copper rod

铜棒, Copper rod

镝锭, Dysprosium ingot

镝棒, Dysprosium rod

铒箔, Erbium foil

铕棒, Europium rod

钆箔, Gadolinium foil

锗粉, Germanium powder

锗光学窗, Germanium Optical Window

钬箔, Holmium foil