(1)a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits
(2)重貴金属元素
(3)灰白色で腐食に抵抗する
(4)ある種のニッケル、銅鉱石に存在し、自然界ではある種の堆積物に見られる