Some resembled windmills, animal cages or ship propellers.
它们有的像风车，有的像关动物的笼子，还有的像船用螺旋桨。
Applications: ship propellers, parts for turbines, bearing, valves, sifter, pumps, pipe systems, apparatus engineering, containers.
应用在：船用螺旋桨，涡轮机部分，承载，阀门，筛子，泵，管道系统，仪器工程以及货柜。
This thesis provides a method of the computer-aided design of ship propellers with finite number of blades by using the collection of illustrative plates.
本论文以计算机为手段，提供了一种对于有限叶船用螺旋桨的图谱设计的计算机辅助设计方法。
Six computer-controlled propellers will keep the ship from drifting more than 15 feet in any direction.
六台通过电脑控制的推进器保持考察船在任何方向上都不会偏离超过15英尺。
Ship sailing tests show the propellers made of this alloy have much lover noise than copper alloy propellers.
实船试验表明，该合金螺旋桨比铜合金螺旋桨噪声有较大幅度降低。
In recent years, several types of the ducted propellers with simplified duct profile have been systematically tested by the Shanghai Jiao Tong University ship model basin.
近几年来，上海交通大学船模试验池对简易导管螺旋桨进行了多种方案的系列试验研究。
This paper introduces a type of steering unit for the ship fitted with two rudder-propellers.
本文介绍了双舵桨船上用的操纵装置。
This paper introduces a type of steering unit for the ship fitted with two rudder-propellers.
本文介绍了双舵桨船上用的操纵装置。
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