螺旋桨

The resuspension of contaminated bottom sediment on the disturbing of boat propeller jet flow was studied.

进行船舶螺旋桨射流扰动下污染底泥起悬的计算研究。

Finally, resuspension rate of contaminated bottom sediment on the action of propeller jet flow was calculated quantitively.

最后定量计算了螺旋桨作用下污染底泥扰动悬浮速率。

By simulating calculation with a new velocity distribution formula of free jet flow and a scour rate one, the resuspension of contaminated bottom sediment on the disturbing of boat propeller jet flow was studied.

河流、湖泊中船舶的航行对于水体底部的污染沉积物具有很强的扰动作用，特别是船舶尾部的螺旋桨射流。

Transient responses of the tiltrotor during the transition flight are calculated aiming at semispan soft-in-plane tiltrotor models with the elastic wing.

相比常规直升机的旋翼机体耦合或飞机的螺旋桨机翼间的耦合，倾转旋翼机的各种耦合关系更复杂，特别是倾转旋翼机在两种飞行状态间的过渡过程中，系统的惯量及耦合特性相应变化，气弹耦合动力学问题尤为复杂，具有很强的非线性与非定常特性。

The effects of main parameters of the slotted nozzles and propellers upon the performance characteristics are analyzed.

根据试验结果；分析了双体导管及螺旋桨的一些主要参数对敞水性能的影响。

Halil was on a mission when the thwacking sound of helicopter rotors suddenly broke the desert silence.

6月他出任务时，突然听到直升机螺旋桨的声音划破沙漠的寂静。

This analysis, which considers approximately the influence exerted on the downstream by the upsteam in the nozzle-rudder configuration, is based on the theoretical results of the ducted propeller.

分析基于导管螺旋桨的理论结果，并近似地考虑导管一舵系装置中上游对下游的影响。

The triangular figure is like screw of the steamer , signify Shanghai is a city that is advancing constantly; Pattern in the center set sail large junk that go to sea,Shanghai Harbor most old shipping, it signify Shanghai one with a long history port city , show magnificent brilliant a tomorrow; The background of the large junk is in face of the white yulan in full bloom of early spring.

三角图形似轮船的螺旋桨，象征着上海是一座不断前进的城市；图案中心扬帆出海的沙船，是上海港最古老的船舶，它象征着上海是一个历史悠久的港口城市，展示了灿烂辉煌的明天；沙船的背景是迎着早春盛开的白玉兰。

Dubbed "Owls", their battery-powered, Frisbee-sized vehicles weigh under a kilogram and have four small propellers.

被称为&猫头鹰&，他们的电池供电，飞盘大小的车辆权衡下公斤，并有4个小型螺旋桨。

It is one of the efficient approaches that the air-film is accreted on blade surface of operative marine propeller for improving cavitation characteristics.

在船用螺旋桨桨叶表面充气以形成气膜是改善其空泡特性的有效方法之一。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。