Drugs are dumped out of propeller planes or unloaded from ships just off the coast of Guinea, Guinea-Bissau, or Sierra Leone, and then broken into smaller parcels to be shipped north.
毒品或用螺旋桨飞机，或用轮船送到几内亚，几内亚比绍，或者塞拉利昂的海岸，在那里分成小包装运到北方。
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。
Propeller slip calculator for powerboats Please use this calculator to figure out all parameters in regard to pitch, gear ratio, RPM, speed and slip.
机动船的螺旋桨滑计算器请使用这个计算器计算出所有参数间距，齿轮比，转速，速度和防滑方面。
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。
According to mechanism of low-frequency broadband noise of the propeller, theoretical analysis method is given and numerical calculation of the noise is worked 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。
So it is significative to carry out a research on room temperature creep characteristic of propeller shaft .
所以对螺旋桨尾轴进行蠕变分析是十分有意义的。
The forced transverse vibration tests of a ship propeller shafting with a variety of propeller blades were carried out on a test bed.
本文论述了在试验台上进行的不同叶片数螺旋桨轴系横向受迫振动实验。
It usually works in the oblique flow, and its blades come into and out of the water surface, therefore vertical forces are generated as the propeller rotates.
由于表面桨一般在斜向流中工作，且存在桨叶出入水面，所以表面桨在工作时会产生垂向力。
Open water test and cavitation test of standard propeller 4119 are carried out in depressurized towing tank.
本文选用标准桨模4119，在减压拖曳水池进行了常压下的敞水重复试验及减压下的空泡性能试验。
Then the mechanism analysis of the planetary gear train propulsion that is the main part of the water-jet propeller is carried out.
然后，对推进器的主要部分——行星轮系推进装置进行机构分析。
The R. P. D. is presented in this paper. Except the usual ship model test, it is possible to carry out measurement of tests for the underwater model and multi-propeller shaft model.
本文提出的变磁阻式螺旋桨动力仪除用于水面船模试验外，并可用于水下模型及多桨轴模型试验。
The R. P. D. is presented in this paper. Except the usual ship model test, it is possible to carry out measurement of tests for the underwater model and multi-propeller shaft model.
本文提出的变磁阻式螺旋桨动力仪除用于水面船模试验外，并可用于水下模型及多桨轴模型试验。
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