求翻译：　　因为每个宏单元用了16个乘积项，因此设计人员可部署大量的组合逻辑而不用增加额外的路径。这就是为何CPLD被认为是“逻辑丰富”型的宏单元以逻辑模块的形式排列(LB)，每个逻辑模块由16个宏单元组成。宏单元执行一个AND操作，然后一个OR操作以实现组合逻辑。是什么意思？

Each macrocell with 16 product terms, so designers can deploy a large number of combinational logic without having to add additional paths. That is why cpld is considered to be "logical" type of macrocell is arranged in the form of a logic module (lb), each logic block is composed of 16 macrocells.