| http://www.w3.org/ns/prov#value | - Particularly, the engine-operated generator unit comprises an engine and a generator driven by the engine arranged in a direction of a rotary shaft, and soundproof case housing the engine, the generator and other components therein, the generator includes an outer-rotor; a centrifugal fan provided on an end surface the outer-rotor of the generator remote from the engine; a duct covering the centri
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