The thrust characteristics of axis symmetry nozzle were mainly measured in test. For the nozzle having a vectoring angle, the deflection efficiency was measured too.

对于轴对称喷管模型主要进行了喷管的推力特性测量，对于实施矢量偏转后的喷管模型除了给出了喷管推力特性外，还给出了喷管的偏转效率。

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The merits of gravitational tractor in asteroid deflections are its high reliability and independence of asteroid characteristics, and the demerit is its low deflection efficiency.

在小行星牵引任务中，引力拖车方法的优点是不依赖小行星特性、可靠性高，缺点是偏移能力有限。

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Meanwhile, such parameters as diffraction efficiency, deflection Angle and driving power of device have been analyzed and computed theoretically.

有效声孔径。电极厚度以及器件的声光衍射效率、偏转角度、声驱动功率等参数。

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