设计了一个基于分层模型的校园网格资源管理模型，包括应用支持层，服务层和资源层。

A campus grid resource management model based on Hierarchical model is designed, which includes Application Support Layer, Service Layer and resource Layer.

youdao

空时编码包括三种：空时网格编码(STTC)、空时分层编码(LST)和空时分组编码(STBC)。

Space-time coding includes space-time trellis coding (STTC), layered space-time coding (LSTC) and space-time block coding (STBC).

youdao

从而增加网格的可扩展性，实现非分层的分散网格系统。

So the extensibility of grid is enhanced and the non-layer decentralized grid system is realized.

youdao