absolute value
名词 n.
美 /ˈæb.səˌlut ˈvæl.ju/|/ˌæb.səˈljut ˈvæl.ju/
英文释义
名词 n.
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For a complex number a+bi, the principal square root of the sum of the squares of its real and imaginary parts, √. Denoted by vertical bars |,|.
— The absolute value |x| of a real number x is √, which is equal to x if x is non-negative, and -x if x is negative.
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数据来源: Wiktionary