精心改良的底线切线刀，专利的结构，使得切线稳定、校调方便。其特殊的切刀推进机构，可以准确的微调出刀的尺寸。
The patented structure provide stable cutting and easy maintenance. The special design under trimmer plunger, to micro-adjust the length of blade precisely when it cutting.
采用基于改进的三弯矩方程进行调距桨推进轴系的动态校中计算。
This paper presents the dynamic alignment calculation of Controllable-Pitch Propeller (CPP) propulsion shafting based on the improved three-moment equation.
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