dys.pro.si.um
n.Symbol Dy （名词）符号 Dy A soft, silvery rare-earth element used in nuclear research. Atomic number ''; atomic weight '2.50; melting point ,407=C; boiling point 2,'00=C; specific gravity 8.53'; valence 3.See table at element 镝：一种用于核研究的柔软银色稀土元素，原子序数为''；原子重为'2.50；熔点,407=C；沸点2,'00=C；特别比重8.53'；原子价为3参见 element
来源：New Latin 现代拉丁语 from Greek dusprositos [difficult to approach] 源自 希腊语 dusprositos [很难接近] dus- [dys-] dus- [前缀，表.困难.] prositos [approachable] from prosienai [to approach] pros- [toward] ienai i- [to go] * see ei- prositos [可接近的] 源自 prosienai [接近] pros- [向] ienai i- [去] *参见 ei-
