该文采用离散元素法DEM模型对二维L型定向风帽流化床中的气-固流动特性进行模拟。
DEM (Discrete Element Method) is used to simulate the gas-solid flow of a two-dimension fluidized bed with L-type wind caps in this paper.
基于群体人工免疫的入侵检测模型主要由一些离散的元素组成，这些元素之间没有直接的交互。
The intrusion detection model based on the population artificial immune is composed of discrete elements among which are no direct interactions.
这两个领域在实际应用中都有着非常重要的意义。因为现实世界通常都同时有连续和离散变量，并有着不确定的元素，这需要转换成易处理的模式。
Both areas are practically significant as real world problems have very often both continuous and discrete variables and have elements of uncertainty that need to be addressed in a tractable manner.
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