名词钍
1. 钍：陶磁器物质例如磁砖(Tiles)、陶器(Pottery)等,经常包含浓缩的天然放射性物质,如铀(Uranium)、钍(Thorium)及钾(Potassium),在许多情况是在加釉(Glaze)过程而将放射活度浓缩了,大部份的陶磁器其辐射量测值几乎与背景值相同,
2. 釷 钍：89 Ac 錒 锕 Actinium | 90 Th 釷 钍 Thorium | 91 Pa 鏷 镤 Protactinium
3. 瑟銀：Eternium 恆金 (OK) | Thorium 瑟銀 (OK) | Khorium 可利安 -> 克銀
4. 钍 (名)：thorax 胸; 胸部; 胸廓; 胸甲 (名) | thorium 钍 (名) | thornbush 棘丛 (名)
1. Thorium is three to four times more abundant than uranium and is widely distributed in many countries as an easily exploitable resource.
2. Researchers used a dating method that exploits the radioactive decay of uranium and thorium atoms to helium atoms in a phosphate mineral known as apatite.
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noun
1. a soft silvery-white tetravalent radioactive metallic element
isotope 232 is used as a power source in nuclear reactors
occurs in thorite and in monazite sands
Synonym: Th atomic number 90