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null-set ['nʌlsεt]
gen. 零集; 空集
null set ['nʌl'set]
math. 空集; 空集合 (empty set); 零测度集
oil 空集; 零集
tech. 零测度集; 空集 (合)
null-set
: 1 phrase in 1 subject
Technology1

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