For a mountainous river, because of the great variation of river morphology along flowroute, the local energy loss has a great impact on hydrodynamics.
山区型河道因河势变化急剧而产生的局部阻力对水流流态影响较大。
2
Flowing capability is big and the flow resistance is little. When the valve opening, the valve core is located inside ball cavity and the flowroute is straight tube.
流通能力大、流阻小。这是因为开启后阀芯位于藏球室内,阀体流道呈直筒式。
3
In this paper, the metal flowroute during closed die extrusion for spiral bevel driving gear of automotive final drive is analyzed and the profile of preformed blank has been designed.