Some agitation is achieved with combinations of foil blade angles, but this does not always provide enough control.

通过组合脱水板角度可获得一定程度的搅动，但这并不总能提供足够的控制。

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Effect of blade Angle at exit on energy performances is shown by conducting energy equilibrium test on impellers with different exit blade angles.

通过对不同出口安放角叶轮的能量平衡试验，了解到出口安放角对泵能量性能的影响。

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Based on the machine development, a research and analyses of auger drill bits with different kinds of drill tips and soil cut blade angles were carried out in tree planting field.

在设备研制成功的基础上，对钻孔机钻头不同钻尖、不同切土刀刃角进行了实地试验研究和分析。

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Once the Roton has been slowed sufficiently by atmospheric drag, however, the pilot will change the blade-angles so that the blades are set spinning by the airflow, slowing the craft still further. (This technique, called auto-rotation, is used by helicopter pilots in emergency landings.) Small thrusters on the side of the Roton will stabilise it, so that it can be steered towards its landing site.

ECONOMIST: On a rotor-blade and a prayer | The