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单词
acorn tube
释义
acorn tube
noun
:
a very small vacuum tube resembling an acorn in shape and used at extremely high frequencies
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borohydride
borohydride
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boron carbide
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boron trifluoride
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borosilicate
borosilicate glass
borotuke
borotungstic
borotungstic acid
borough
borough
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更新时间:2025/3/29 10:23:32