cut-out propeller 镂空式螺旋桨
The propeller of the plane is out of order, and is under repair.
这架飞机的螺旋桨出了点问题，正在维修。
A new propeller model open - water test was carried out in the decompressible towing tank .
本文介绍了在减压拖曳水池中最新开发的桨模敞水试验技术。
According to mechanism of low frequency broadband noise of the propeller, theoretical analysis method is given and numerical calculation of the noise is carried out as well.
在分析螺旋桨低频宽带噪声成因的基础上得到了理论计算方法，并作了数值计算。
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