But now, twenty years later, multiprocessing has returned to these same personal computer systems through symmetric multiprocessing.
但是到了二十年后的现在，多处理利用对称多处理技术又回到了个人计算机系统中。
A while ago an AD hoc group of computer scientists and cryptographers contributed to a paper that recommended a key of at least90bits for symmetric algorithms used in commercial security.
不久前，计算机科学家和密码学家专门小组发表了一篇论文，建议用于商业安全的对称算法至少要用90位的钥匙。
Introduces the basic principle of auxiliary design on axially-symmetric spare part with computer and tells the content of computer software as well as its program method and its stage.
本文介绍了轴对称零件计算机辅助设计的基本原理和计算机软件的内容及软件的设计方法、步骤。
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