在比（AR）条件更弱的一类超线性条件之下，利用变分方法讨论了一类超线性四阶椭圆方程的无穷多解的存在性。
By means of the variational approach, in a condition weaker than(AR) the existence of infinitely many solutions of fourth-order elliptic equation is discussed.
带有一对传输零点的准椭圆函数滤波器相比切比雪夫型滤波器具备更好的选择性。
The quasi-elliptic function filter with one transmission zero has the better selectivity than the general Chebyshev filter.
同时基于椭圆曲线上的零知识证明可以用比RSA短得多的密钥，达到与RS A同等级别的安全性。
At the same time, same security level as RSA has can be achieved by ellipse curve-based zero knowledge proof with the key much shorter in length than that of RSA.
同时基于椭圆曲线上的零知识证明可以用比RSA短得多的密钥，达到与RS A同等级别的安全性。
At the same time, same security level as RSA has can be achieved by ellipse curve-based zero knowledge proof with the key much shorter in length than that of RSA.
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