| 摘要 |
The present invention pertains to a nozzle blade having: a front edge formed in a curve-line shape in such a manner that the distance of the front edge from the pivot axis of the nozzle blade changes depending on the position in height of the nozzle blade; and a rear edge formed in a straight-line shape in such a manner that the distance of the rear edge from the pivot axis of the nozzle blade is constant irrespective of the position in height of the nozzle blade. |
