铂线, Platinum wire

铂丝, Platinum wire

镨, Praseodymium powder

镨棒, Praseodymium rod

铼箔, Rhenium foil

铑黑, Rhodium black

铑箔, Rhodium foil

钌黑, Ruthenium black

钌 片, Ruthenium pellets

钐箔, Samarium foil