Different kinds of guns have different gun structures and automatic principles.
不同种类的枪支结构及自动原理有所不同。
The relationships of SDR andcatchment areas are discussed according to the self-similar principle of fractaI theroy,and statisticalmedel of SDR is thus.
应用分形理论的自相似原理，探讨了泥沙输移比与小流域集雨面积的关系，并得出泥沙输移比（ＳＤＲ）的统计模型，可用于估算紫色土丘陵区资料短缺小流域的输移比和产沙量。
In this paper, The relationships of SDR and catchment areas are discussed according to the self-similar principle of fractal theroy, and statistical model of SDR is thus obtained which can be used to estimate, SDR and sediment yield of small watersheds lacking of research data.
应用分形理论的自相似原理,探讨了泥沙输移比与小流域集雨面积的关系,并得出泥沙输移比(SDR)的统计模型,该模型可用于估算紫色土丘陵区资料短缺小流域的输移比和产沙量。