This paper deals with the test plant and test results of a gas generator of a by-pass dual-rotor engine with variable duct flow pathresistance.
途述了带外函道的双转子发动机内、外函分流，各自通流阻力可以改变的燃气发生器试验装置和试验结果。
2
Sometimes, the best route to fulfilment is the path of more resistance.
有时候，实现梦想的最佳途径就是那条有更多阻力的道路。
3
In the intergranular spaces of rocks, however, fluid must flow around and between grains in a tortuous path; this winding path causes a resistance to flow.