The industrial cluster is an economic geography phenomenon or experience, which also may be regarded as a kind of industrial space organization or the economic theory pattern.
产业集群是一种经济地理现象或实践经验，又可看作一类产业空间组织或经济理论模式；
This paper employs feature selection theory and pattern aggregation theory to reduce feature space dimension.
应用特征选取和模式聚合理论以降低特征空间维数。
The propagation pattern of the EH11 mode of waveguide HCN laser in free space is discussed and compared with the theory.
本文讨论了波导hcn激光器输出的EH11模在自由空间中的传播模式，并与理论进行了比较。
The propagation pattern of the EH11 mode of waveguide HCN laser in free space is discussed and compared with the theory.
本文讨论了波导hcn激光器输出的EH11模在自由空间中的传播模式，并与理论进行了比较。
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