A lustrous gray strong metallic element resembling titanium,it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon.
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- 一种有光泽、灰白色、坚固的金属元素,类似钛,在核反应堆中用作中子吸收剂,见于斜锆石中。