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单词 ku
释义

Kun.

Brit. /ˌkeɪˈjuː/, U.S. /ˌkeɪˈju/
Origin: Formed within English, by clipping or shortening. Etymon: kurchatovium n.
Etymology: Symbolic abbreviation for kurchatovium n.
Chemistry. Now disused.
(A symbol proposed for) the chemical element, atomic number 104, once called kurchatovium (now called rutherfordium).
ΚΠ
1967 Soviet Radiochem. 9 602 Isotopes of elements that form comparatively volatile chlorides (Sn,Nb,Zr,Hf,Ku).
1971 Inorg. & Nucl. Chem. Lett. vii. 1119 We believe that these comments raise some valid questions as to whether or not ‘element 104 (kurchatovium—Ku) was chemically isolated and identified’.
1987 Progress Particle & Nucl. Physics 19 219 These experiments yielded the new isotopes 255Ku and 256Ku.
This is a new entry (OED Third Edition, December 2013; most recently modified version published online March 2022).
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n.1967
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