桨叶

With the increase in tempo, the angle of hands away hail no significant change, but in 4 tempo for 3 athletes, their angle of entrance always greater than their angle of run, and their left angle of hands always were greater than right, it means that their left extent of hands away were longer than their right.

转桨角的变化幅度不大，但在四种桨频下，3名运动员的入水角都大于出水角。3名运动员的左转桨角比右转桨角大，意味着3名运动员左手桨叶的划幅比右桨大。

In order to investigate the coupling characteristics between elastic deflections and rigid motions of the blades, the moderate deflection beam model was adopted to treat elastic deflections and two methods were adopted to treat rigid motions based on infinitesimal rotation and finite rotation.

为了研究桨叶刚柔耦合特性，采用中等变形梁模型处理桨叶弹性变形，分别采用小转角和有限转角两种方法处理桨叶绕铰的刚性运动。

Results show:(1) coupling of elastic deflections with rigid motions is distinctive;(2) computations of two methods are in good agreement with test data, when rotation angle is small;(3) when rotation angle is large, couplings increase distinctly and the differences between the results of the two computational methods increase;(4) the bending stiffness has evident effect on the coupling, and the coupling will increase with the decrease of bending stiffness;(5) in case of the blade is relatively soft, the calculated values of phase lag and amplitude augment based on infinitesimal rotation will exist.

计算分析表明：(1)弹性桨叶存在较明显的刚性运动和弹性变形耦合；2）挥舞角较小时，两种处理方法计算结果一致，均与试验数据吻合较好；(3挥舞角较大时，刚柔耦合增强，两种处理方法的计算值差别较为明显；(4)桨叶弯曲刚度对桨叶刚柔耦合特性有较明显影响，刚度越小，耦合越强；(5)桨叶如果比较柔软，小转角处理方法计算值相对有限转角处理方法，相位滞后、幅值增加均较为明显，计算桨叶动响应时需引起注意。

The experimental results show that the impeller with high ratio of circulation to shear is suit to be used in circulation control process, the impeller with low ratio of circulation to shear is suit to be used in shear control process, and the impeller with medium ratio of circulation and shear is suit to be used in circulation and shear co-control process.

实验结果表明，循环与剪切配比高的桨叶适用于循环控制的混合过程，循环与剪切配比低的桨叶适用于剪切控制的混合过程，而循环与剪切配比适中的桨叶适用于循环与剪切共同控制的混合过程。

When the system lost pressure, it drives the pitch safety cylinder action, to bring the blade back to downwind position.

每个桨叶配备各自独立的蓄能器组件，35L蓄能器，在系统失压情况下，驱动安全油缸动作，使桨叶回到顺桨位置

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。

About my company installed in the maintenance of plant and machinery, found that blade heat exchanger machine, to simplify the structure and easy maintenance, mainly in energy, high efficiency, nor the advantages of dust pollution of the environment, and the former Ministry of Chemical Industry blade technology patents produced in cooperation propeller Ye cooler Soda,(Patent No. ZL-02-2-37265.2), in practice and on several technical improvements, thereby creating a series of blades cool YL Soda, Soda Plant in Tangshan, Tianjin Soda Plant production was Praise.

我公司从事安装检修机器设备，发现桨叶式换热机，结构简化，易维修，主要是省能，效率高，又无粉尘污染环境的优势，与原化工部桨叶技术专利人员合作制作桨叶凉碱机，（专利号ZL-02-2-37265.2，在实践中又对几项技术进行改进，从而制造的YL系列桨叶凉碱机，在唐山碱厂，天津碱厂生产中获得好评。

Wave is the rotor blades hinges on the hinge between the propeller blade hub, the hinge allows the blade perpendicular to the rotor plane up and down waving, in order to make it not have chatter and the shutdown will not touch the ground, usually limited to damping and compatible digital devices ...

挥舞铰是旋翼桨叶于桨桨毂之间的铰接，这个铰接允许桨叶垂直于旋翼平面上下挥舞，为了使之不会产生颤振及在停机时不会触及地面，通常都有阻尼及限位装置相配合。。。。

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。

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