本文将动量-叶素理论推广应用于计算水平轴风车叶轮有侧偏角或上仰角时的气动力。
Based on the traditional Momentum-Blade Element theory, an improved method of aerodynamic calculation about the horizontal axis wind turbine in yaw or in pitch-up is presented in this paper.
假炮的动作被传递到炮位上，各炮位跟随假炮动作的读数转动仰角及方向，在后来的装备上更交给自动控制设备去完成。
The movements which positioned the dummy gun were transmitted to the mounts, to be followed in elevation and train by matching Pointers or, in later installations, by automatic control equipments.
数字摄像机安放在经纬仪上，经纬仪布置在飞机飞行轨迹的两侧，构成了一个能够在俯仰角和方位角下拍摄图像的光测机构。
The cameras are placed on the theodolites which are laid on the sides of flight path, and it can take airplane′s photos at azimuth and pitching angle.
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