1.Conclusion Some known results about bi-semilattice becoming distributive lattice are expanded.
结论推广了双半格成为配格一些结果。
2.The paper has summarized systematically evolutionary law in time and space on petrofacies and paleogeography of Late Paleozoic era in Northern China and distributive law of depositional systems.
3.The lowest cell density was found in duodenum.The origin of distributive mode of argyrophil cells in the digestive tract of Takydromus wolteri might be related to its habitat and feeding habit.