同义词
1)primary sedimentary structures,原生沉积构造2)the primary sedimentary structures of a fifth category,第五类原生沉积构造3)primary sedimentary structure,原始沉积构造4)syndepositional structure,同生沉积构造5)biogenic sedimentary structure,生物沉积构造6)microbially induced primary sedimentary structure,微生物参与形成的原生沉积构造
