Arbitrary linear code is equivalent to systematic code, and the equivalent code's automorphism is also isomorphism, so the computation is also simplified.
3．利用任意线性码等价于系统码，而等价码的自同构群也同构的性质，更加简化了自同构群的计算。
参考来源 - 线性码的自同构群·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
The encryption and digital signature solve the problem in integrity and confidentiality of active code. The application of decode-binding realizes the scalability in systematic encryption methods.
加密与数字签名解决了主动代码的完整性、机密性问题，这里使用解码绑定方式，实现了系统加密方法的可扩展。
For a cyclic code, it is difficult to find the set of it's covering polynomials. We have not had a systematic method to find it.
给定一个循环码，求取它的覆盖多项式集合目前尚无系统的方法。
It has been pointed out that the five-point method specified in the current code gives values with smallest errors, whereas markedly small systematic errors are found in relation to all other methods.
指出目前规范中五点法误差最小，其它方法对床沙质均有较大系统误差。
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