| 单词 | atomic number 40 |
| 释义 | atomic number 40 (extremely rare) n WORD FAMILY atomic number 40 n a lustrous grey 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 Syn|Hyper Zr, zirconium metal, metallic element any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
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