桨

In the first part, first, the operational principle of Varivec Propeller is explained. Secondly, the mathematical model for predicting longitudinal and transverse movement hydrodynamic characteristics of Varivec Propeller under steady or unsteady condition are present, based on the general propeller lifting-surface theory, potential flow theory and Green theorem. Thirdly, theoretical calculation methods for predicting hydrodynamic characteristics when the influence of paraboloidal boss on the performance of Varivec Propeller is or isn't considered are present, based on The finite basic solution method, the unsteady vortex lattice method and Hess-Smith method Different rake angle is adopted according to different desire in practical application.

在理论计算部分，本文首先给出了全方向推进器的工作原理，然后基于常规螺旋桨升力面理论、势流理论和格林定理建立了定常和非定常状态下全方向推进器纵向、横向运动的水动力性能计算的数学模型，并利用有限基本解法、非定常涡格法和Hess-smith方法分别对考虑和不考虑桨毂影响时的全方向推进器纵向、横向运动水动力性能进行了数值预报。

After that he settled the line across his shoulders in a new place and held it again with his left hand resting on the gunwale.

而后他将肩膀上的绳索挪动一个新的位置，然后用靠在放桨的木栓上的左手握住它。

A device attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing.

作为划船支点的把桨固定住的在船舷上缘的装置。

I remembered being very careful never to rub my paddle against the gunwale for fear of disturbing the stillness of the cathedral.

我不曾让桨擦着船沿，——那小心翼翼的情状，至今历历在目。

At last ,while opening the hoper outlet , waterish particles are pushed off under the centrifugal effects of blade .

料门，湿颗粒在桨叶离心力作用下推动出料斗。

Powder metrical can be charged into the material pan from the conical hopper and continue to rotate in the container under the action of mixing blade once the hoper is closed.

粉状物料从锥形料斗上方进入物料锅，待料斗关闭后在混合桨的搅拌下，粉料在容器内作旋转运动，同时物料沿锥形壁方向变化，逐步生成液桥。

This paper presents the modelling analysis for the rotor blade of the horizontal axis wind turbine using finite element analysis method.

用有限元分析的方法对水平轴风力机的桨叶进行了计算模态分析和研究。

This paper studies the structural dynamics of the rotor blade of the horizontal axis wind turbine using the modal analysis method.

本文用模态分析的方法研究了水平轴风力机桨叶的结构动力学特性。

Their parents agree but only if Mufasa's majordomo, the hornbill Zazu, goes with them.

他们的父母同意，但是只有当如果 Mufasa 的管家，犀鸟 Zazu(花楸桨果 Atkinson)，和他们去。

So the hydrodynamics of the flow is very important for process design and optimization.

因此，本文从PIV测量和CFD数值模拟两方面对多种桨叶及流型下搅拌槽的流动特性进行深入研究，为其应用基础研究及优化设计提供指导和参考。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。