桨

Firstly, through the theoretical analysis of the flexible-oared wind generator, mechanics model of this wind generator is created. Then the formula about absorbing power of the wind generator is deduced, which is the foundation of base size being determined while different grades of the wind generators are designed.

首先，通过对柔性桨风力发电机原理分析，建立了该风力发电机的力学模型，并以这一力学模型为基础，推导出了该风力发电机的吸收功率公式，以此作为设计不同功率柔性桨风力发电机时，确定其基本尺寸的依据。

To further optimize the coal kneading device, some other simulations were done by changing the rotating speed of shaft 、 the import flow of coal and oik the form of impeller and the space between blade outer end and mixing tank.

结果表明，对于该混合槽，最优的设计参数为旋转轴的转速和物料的进口流量都采用设计值、桨叶采用斜45°圆盘涡轮桨、桨叶外径取Φ253mm。

C29 Main rotor blade is all composite with nickel and titaniumabrasion strips and a removable tip cap assembly.

主旋翼桨叶是镍、钛复合材料制成，有可拆卸桨尖罩。桨叶表面覆盖金属网以防止雷击。

We can produce any different pitch blade according to customer needs, the classic value of the pitch: A, 10 degree, suitable brush motor FP helichoper, let lower speeds rotor greater lift; B, 8 degree, suitable brushless motor FP helichoper, can make the main rotor get a higher speed; C, 6.5 degrees, suitable some DIY FP helichoper, can make the helicopter have better lock tail performance with a small diameter and high-speed tail rotor.

桨距可以根据客户需要进行定制，经典的桨距值为：A、10度，适合有刷马达的FP电直，能够在较低的转速下取得更大的升力；B、8度，适合无刷马达的FP电直，能够使主桨获得更高的转速；C、6.5度，适合玩家DIY的FP电直，配合小直径高转速的尾桨，能够获得更好的锁尾表现。

The mixing power and circulation characteristics of Newtonian fluid and pseudoplastic fluid were measured in a φ300mm organic glass vessel,by using anchor and tri-leaf impeller,anchor and inner-outer screw,orthogonal twi-stratm triangle blades and single screw,orthogonal twi-stratum triangle blades and inner-outer screw types of combined agitators.

为使聚合釜内搅拌介质在湍流、过渡流及层流域都能达到良好的混合，对锚－三叶推进器、锚－内外单螺带、正交双层三角桨－单螺带、正交双层三角桨－内外单螺带等4种组合桨搅拌器，于φ300mm的有机玻璃釜中，测定了在牛顿流体和假塑性流体中的搅拌功率和循环特性。

On the basis of analyzing the theory of the modeling of the propeller surface, this paper transforms the section data given by design to the data in Descartes coordinates. Interpolates the section data to get enough data and fits the blade surface with the least square method. A perfect C2 blade surface can be obtained by adjusting the deviation weight and fairing weight. According to the cylinder rough, two rough cut methods are preferred.

本论文在深入分析螺旋桨曲面成型原理的基础上，将设计时给定的桨叶曲面的切面数据转化为笛卡尔坐标系中的坐标，利用B样条方法对截面数据点插值并加密，得到足够的数据点，进而利用最小二乘法拟合出桨叶曲面，通过调整偏离权和光顺权得到了理想的二阶连续的桨叶曲面。

A maneuvering mathematical model for Controllable-Pitch Propeller ships with three degrees of freedom is established according to separate modeling theory. Based on Netherlands Ship Model Basin\'s open-water tests, CPP thrust coefficients and torque coefficients in four-quadrant with different pitch ratio of screw and different types of CPP are obtained by using Akima interpolation. Therefore, CPP thrusts and torques are obtained.

基于船舶操纵性分离建模理论，采用荷兰船模试验水池B系列螺旋桨的敞水试验结果，利用Akima插值获得了不同类型的调距桨在不同螺距比下的四象限推力系数和扭矩系数，求得调距桨的推力和扭矩，建立了调距桨船舶的平面运动数学模型。

At normal operation, the three pitch control cylinders receive control si...

在正常工作状态下，由三只控制油缸接受控制系统指令实现精确变桨；在故障状态下，三只安全油缸分别驱动三只桨叶回到顺桨位置。

Majority of these the motor vessel that hang paddle belong to villages and towns waterborne enterprise and individual shipping owner, because hang cost of paddle motor vessel cheap, management is simple and get owner people extensive favour, the motor vessel hanging paddle that devoted at that time battalion carries mostly from 5, 150 tons, basically be engaged in carrying river sand, building stone, farming by-product, often carry in the battalion on the Pearl River affluent of a network of waterways of Pearl River delta, also comprise a few down to sometimes a ten fleet, sail vast and mightily on Pearl River main channel.

这些挂桨机船绝大部分属于乡镇水运企业和个体航运业主，由于挂桨机船造价低廉、治理简单而受到业主们的广泛青睐，当时投入营运的挂桨机船大多从5—150吨，主要从事运输河沙、建筑石料、农副产品等，经常在珠江三角洲河网的珠江支流上营运，有时也组成几艘以至十几艘的一支船队，浩浩荡荡地航行于珠江主航道上。

The results here show that the blade lag damper can greatly reduce the instability range of a helicopter, and that the pitch angle of blades takes an important role in the stability of ground resonance, as it does in the flap-lag stability of a blade

本章结果表明桨叶的减摆器阻尼可以有效地减小不稳定运动发生的区域。并且，同桨叶的挥摆稳定性一样，桨叶变距角也是影响&地面共振&稳定性的一个重要因素。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失