The Cubans had attached floats and propellers to a 1951 Chevy truck.
这些古巴人在一辆1951年的雪佛兰卡车上安装了浮筒和螺旋桨。
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。
Most use electrically driven propellers or thrusters to manoeuvre.
大多数使用电力驱动的螺旋桨和推进器进行操纵。
Varying the speed of the propellers also provides a means of steering the aircraft.
改变螺旋桨各自的速度也因而成了操纵这部飞行器的方式之一。
The ship's propellers churned the waves to foam.
轮船的推进器将海浪搅出泡沫。
Do twin propellers turn inward or outward when going ahead?
双螺旋桨在向前推进时向内旋还是外旋？
The propellers produced by this company are quality-guaranteed.
这家公司生产的推进器质量值得信赖。
The ship's propellers churned up the water as it increased speed.
轮船加速时，螺旋桨转动，浪花翻滚。
Its propellers fold inwards as it lands so it can fit in a single car parking space.
降落时，它的螺旋桨会向内折叠从而只占据一个停车位。
Itss propellers fold inwards as it lands so it can fit in a single car parking space.
降落时，它的螺旋桨会向内折叠从而只占据一个停车位。
Its propellers 4 fold inwards as it lands so it can fit in a single car parking space.
降落时，它的螺旋桨会向内折叠从而只占据一个停车位。
He saw no fire or smoke during the flight and he believed both propellers were rotating.
他没有在飞行过程中看到火或烟，他认为螺旋桨在旋转。
Used for condenser tubes, propellers, pump fittings, turbine blades, and for chemical plant.
它用来制造冷凝管、推进器、泵配件、透平叶片，并用于化工设备等。
A simplified theoretical method for calculating tandem propellers is presented in this paper.
本文提出了一个串列螺旋桨的简化理论计算方法。
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。
The spinning of the propellers generates the necessary lift, or upward force, to raise the platform.
螺旋推进器快速旋转，生成必要的上升力，使平台升起。
Such propellers as we have recently designed for small ships are actually modelled on fish tails.
象我们近来为小船设计的那样的螺旋桨实际是模仿鱼尾制造的。
He conducted tests to show that they could recognize different vessels by the sounds of their propellers.
他的试验表明，海豚可以通过辨别螺旋桨发出的声音鉴定不同的舰只。
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。
In tests on small vessels and propellers, the sensor arrays proved robust and even more sensitive than expected.
在小型船舶和螺旋桨上的测试结果表明，这个传感器阵列是可靠的，而且比预期的更为敏感。
But I also knew how common it was for these lumbering giants to be gashed by boat propellers or entangled in crab traps.
但我也知道，它们这些笨拙的海洋生物经常被船的螺旋桨划伤，或卷入捕蟹器中。
This paper presents the results and analyses of open water tests of tandem propellers in a nozzle of accelerating flow type.
本文叙述了加速导管中串列螺旋桨敞水试验结果及分析。
Moreover, the gently rising buttocks that provide the shallow transom mean more room for bigger and more efficient propellers.
微微翘起的船尾使过梁吃水很浅，意味着有更大空间可以安装更大更高效的螺旋桨。
The research of wave-wing type and fishtail type propellers has been promoted based on the theory and practice of wave-mechanics.
在波浪动力的理论和实践的基础上，促进了浪翼和鱼尾型推进器的深入研究。
This avoids the use of a traditional propeller shaft and puts the propellers in a clear flow of water, which greatly improves efficiency.
这样就避免了使用传统的螺旋轴，将螺旋桨置于干净的水流中，从而大大提高了效率。
This avoids the use of a traditional propeller shaft and puts the propellers in a clear flow of water, which greatly improves efficiency.
这样就避免了使用传统的螺旋轴，将螺旋桨置于干净的水流中，从而大大提高了效率。
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