| 摘要 |
A propelling machine (2) is configured curved- tubular, on a ship bottom (1b), with a front casing (12) having a suction inlet (11) opening fore to water, an impeller casing (10) having an impeller (17) inscribed thereto, and a rear casing (14) having a delivery outlet (13) opening aft to water, and the impeller (17) is forward and reverse rotatable.
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