Impeller for both equipped with moving blade wheel, which is the component of impulse turbine rotor. Also referred to as the roulette and installation on the floorboard of the rotor blade. Also referred to as the roulette and installation on the floorboard of the rotor blade.
Basically has the following four rubber impeller a variety of forms:
(a) closed; (b) the first half of the open; (c) after the half open; (d) open
According to the classification of blade shape:
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