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单词
trochotron
释义
troch·o·tron
\ˈträkə.ˌträn\
noun
(
-s
)
Etymology:
troch- + -tron
:
a high-vacuum tube or a mass spectrograph in which the ion paths controlled by magnetic and electric fields are trochoids
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plaiting
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planation
planation
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更新时间:2026/1/31 23:16:57