The structure of the thermal secondary maceral was different from that forming in the period of peatification.
热变次生组份具有不同于泥炭化时期所成的显微组份结构特征，往往具有较为强烈的光学各向异性。
The formation of peat swamps can be divided into two major categories, i. e. waterlogged peatification and terrestrial.
泥炭沼泽的形成可分为水域泥炭沼泽化和陆地泥炭沼泽化两大类。
The formation of peat swamps can be divided into two major categories, i. e. waterlogged peatification and terrestrial.
泥炭沼泽的形成可分为水域泥炭沼泽化和陆地泥炭沼泽化两大类。
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