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单词
helium
释义
helium
/ˈhi:liəm/
n. Chem.
a colourless light inert gaseous element occurring in deposits of natural gas, used in airships and as a refrigerant (symbol
符
He
)
【化】
(
化学元素
)
氦
[Greek
hēlios
‘sun’ (having been first identified in the sun's atmosphere)]
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penstock
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pentachord
pentacle
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pentadactyl
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更新时间:2025/8/22 4:45:55