At the end of the annularpassage, shock wave occurs when the relative lift is less than 6% and the pressure ratio is less than 0.7, which causes a greater total pressure loss.
在相对升程小于6%、压比小于0.7后，环形通道的末端将产生激波，激波带来较大的全压损失。
2
The suspended sediment in the south passage at the Yangtze river estuary was used to conduct experiment in the two-way annular flume about sediment concentration, salinity velocity and flow velocity.
选用长江口南槽悬沙，在双向环形水槽中进行盐度、含沙量、流速等不同条件下组合实验。
3
A first inwardly extending annular shoulder is provided between the sealable opening and the bottom opening, defining a flow passage along a longitudinal axis of the housing.