These elements—samarium, gadolinium, terbium, dysprosium, lutetium, scandium and yttrium— are crucial elements for manufacturing key products used in semiconductor, defense, aerospace and green energy.

素——钐、钆、铽、镝、镥、钪和钇——是制造导体、国防、航空航天和绿色能所关键产品的关键素。