This paper is concerned with the influence of PBCF on various performances of the propeller.
本文就PBCF对螺旋桨诸性能的影响效果及其使用，进行了较系统地论述与分析。
The Propeller Boss Cap Fins(PBCF)is a new Japan—developed deviceattachedto theshaftof propeller.
在螺旋桨上加装桨毂帽鳍PBCF，是日本近年来开发的一种廉价的节能装置。
The boss vortex cavitation of propeller can be avoided by PBCF, and an increase of 2% in propulsion efficiency has been measured in the model tests.
桨毂帽鳍可改善毂涡空泡，模型试验状态下可提高推进效率2%左右。
The boss vortex cavitation of propeller can be avoided by PBCF, and an increase of 2% in propulsion efficiency has been measured in the model tests.
桨毂帽鳍可改善毂涡空泡，模型试验状态下可提高推进效率2%左右。
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