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单词
Kronecker delta
释义
Kronecker delta
释义
克罗内克符号
英英释义
Noun
1. a function of two variables i and j that equals 1 when i=j and equals 0 otherwise
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ear phone
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earphone for heart sound auscultation,stethoscope
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earphone impedance
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earphone unit
earpick
ear pick
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更新时间:2026/1/14 9:22:19