Falling raindrops break up through hydrodynamic effects . 下落雨滴由于流体动力作用而破碎。
2.
Wuerxun and beier depression are regarded as prosperity in exploration . lt is very important that the palaeo - hydrodynamic effect on the hydrocarbon migration and accumulation 乌尔逊、贝尔凹陷是海拉尔盆地最有勘探前景的二个凹陷。