design n constraint 设计约束
Position n Constraint 位置约束
foreign n key constraint 外键约束
constraint matrix for n-port N端口约束矩阵
n constraint
n约束
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The oils with high content of n-alkanes and those with low content were classified clearly by this developed method, but it still had some constraint to differentiating oils with little difference.
该方法对正构烷烃差异较大的油品进行了很好的区分，但对差异较小的油品其分辨能力仍有一定局限性。
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