根据渗滤囊分布情况，将暴露面划分为不发育渗滤囊构造和发育渗滤囊构造两种。
According to the distribution of percolating bags, they are classified into two groups: the exposed surface with the percolating bag and the one without percolating bag.
根据渗滤囊分布情况，将暴露面划分为不发育渗滤囊构造和发育渗滤囊构造两种。
According to the distribution of percolating bags, they are classified into two groups: the exposed surface with the percolating bag and the one without percolating bag.
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