新一代数字移动族也四处流浪，但身上几乎空无一物；无论走到哪里，他们都能轻易获取信息并与人取得联系。

The emerging class of digital nomads also wander, but they take virtually nothing with them; wherever they go, they can easily reach people and information.

youdao

对准循环Q矩阵和完全循环差集进行了研究，在此基础上提出了一种LDPC码码族的代数构造方法。

This paper presents an algebra method for constructing LDPC code based on Vandermonde matrix, which includes quasi-cyclic Q matrix and the perfect cyclic difference sets.

youdao