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电子源
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DEFINITIVE EXAMPLES 权威例句〔thermionic tube〕An electron tube in which the source of electrons is a heated electrode.热离子管:电子源是加热电极的电子管美国传统
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theanine
theanthropic
theanthropic
theanthropic
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theanthropism
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thearchy
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theater
theater
theater
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theater critic
theater critic
theater curtain
theater in the round
theater of operations
theater of operations
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