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单词 negative valence
例句 DEFINITIVE EXAMPLES 权威例句〔donor〕Electronics An element introduced into a semiconductor with a negative valence greater than that of the pure semiconductor.【电子学】 施主:放进半导体中的元素,其负价大于纯半导体美国传统〔reduction〕A decrease in positive valence or an increase in negative valence by the gaining of electrons.还原:通过获得电子而造成正价电子减少和负价电子增多美国传统
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