a hard gray lustrous metallic element that is highly corrosion-resistant; occurs in niobite and fergusonite and tantalite.
一种坚硬有光泽的灰色金属元素,抗腐蚀性极强,铁
、褐钇
和钽铁
中。
a hard gray lustrous metallic element that is highly corrosion-resistant; occurs in niobite and fergusonite and tantalite.
一种坚硬有光泽的灰色金属元素,抗腐蚀性极强,铁
、褐钇
和钽铁
中。
The major metal minerals recycled include tantalum niobite, fine spar, tantalum aeschynite, wolframite and scheelite, which have large density of generally 5 to 7.
要回收的金属
物钽
铁
、
石、钽易解石、黑钨
、白钨
,密度比较大,一般为5~7。
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