本文研究了和素数有关的方程组和不等式组。通过更细致的指数和估计，我们改进了以前的结果。

In this paper we study systems of Diophantine inequalities and equations with prime Numbers. We improve previous results by more delicate estimates of exponential sums.

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本文是采用变分估计方法考虑一类椭圆方程在临界指数和自由边界条件下解的存在性问题。

This papar deals with the problem of solution's existence about elliptic equation under limiting exponents and free boundary problem by variational evaluation methods.

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交叉价格弹性系数和便可以计算出使用估计系数为两岸物价指数和距离的措施之间的品牌。

The cross-price coefficients and elasticities can then be computed using the estimated coefficients for the cross-price indices and the distance measures between brands.

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