null set of class [数] 类的零集
null-set 零集
l null set l 零集
locally null set 局部零集
function-theoretic null-set 函数论的零集
SET NULL 设空值 ; 设置为空 ; 置空方式 ; 将外键设置为空
l null set l零集
null data set [计] 空数据组 ; 空数据集
null set of class nf NF类零集
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And pointed out "this sentence" refers is the null set, is insignificant, from the analysis of the liar sentence itself, thus proposes own the approach to paradox solution.
并从说谎者语句本身的分析指出“本语句”的指称为空集，从而提出自己的解决语义悖论的方案。
The relation between threshold, weight and matching degree is also discussed. In order to make the querying friendlier, the method to avoid returning null set and corpora is also presented.
研究了权重、阈值和匹配度之间的关系，提出了避免查询结果为空集或全集的方法，使得查询更加人性化。
If doesn't exist or is NULL, set to and return.
如果不存在或者是NULL，就把设置为并返回。
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