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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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poormaster
poor-mouth
poor mouth
poorness
poor pine
poor preacher
poor priest
poor pussy
poor rate
poor relation
poor relief
poor robin's plantain
poor soldier
poor-spirited
poor-spiritedly
poor-spiritedness
poort
poortith
poor white
poorwill
poot
poove
pop
POP
pop
英语词典包含332784条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。
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更新时间:2026/9/23 20:56:53