请输入您要查询的英文单词:
单词
umbral symbol
释义
umbral symbol
noun
:
a symbol indicating substitution in turn of each of
n
given values followed by addition of the results obtained
< the
umbral symbol a
in the expression
x
a
y
a
which stands for
x
1
y
1
+x
2
y
2
+…+x
n
y
n
>
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更新时间:2025/3/28 0:45:21