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单词
black selenium
释义
WordReference Random House Unabridged Dictionary of American English © 2024
black
′
sele
′
nium,
[
Chem.
]
Chemistry
an allotropic form of selenium occurring as a black, amorphous, water-insoluble, light-sensitive powder: used chiefly in photoelectric cells.
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更新时间:2025/7/23 18:32:45