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1 Noun 1 Verb 0 Adj. 0 Adv.
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ZH求和Noun
ZH
求和符号（英語：summation；符號： ∑ {\textstyle \sum } ，讀作：sigma），是欧拉于1755年首先使用的一个数学符号。
加法求和符号總和
bn:00001296n Concept
English:
mathematics
ZH求和Verb
EN
Form or constitute a cumulative effect
总括
bn:00094586v Concept

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