However, when the order of ARMA model is very high, to compare every candidate model's criterion value is computationally infeasible.
但是，当模型的阶数很高时，无法计算并比较每一个备选模型的准则函数值。
It is easier to compute a message digest from a password and computationally infeasible to compute the password based on its message digest.
从密码来计算消息摘要是比较简单的，但以消息摘要为基础来计算密码却是不可行的。
A cryptographic hash function has the property that it is computationally infeasible to find two distinct inputs that hash to the same value.
加密哈希函数有这样一个属性：在计算时不可能将两个不同的输入通过哈希算法取为相同的值。
The encryption using crypto algorithms is ensured by the fact that it is computationally infeasible to generate plaintext that matches the hash value.
使用加密算法的保密性由这样一个事实保证，即生成与哈希值匹配的明文在计算上是不可行的。
The encryption using crypto algorithms is ensured by the fact that it is computationally infeasible to generate plaintext that matches the hash value.
使用加密算法的保密性由这样一个事实保证，即生成与哈希值匹配的明文在计算上是不可行的。
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