| http://www.w3.org/ns/prov#value | - Thus, a rotor and a casing have to be made of iron or other similar materials, resulting in an increase in weight.SUMMARY OF THE INVENTIONIn view of the above mentioned problems of prior generating sets, it is an object of the present invention to provide a generating set which is capable of enhancing volumetric efficiency and temperature efficiency, and thus decreasing power foroperating the gene
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