这是一个上升，注意这正俯仰梯度指示，增加高度会降低空速。
This is a climb, note the positive pitch ladder indication on the HUD, the increasing altitude, and decreasing airspeed.
梯度使气流方向测量值向负梯度方向偏转。 圆柱探针和锥形多孔探针相比，气流方向测量误差对速度梯度更敏感，纵向梯度对俯仰角测量值的影响尤其大。
The velocity gradient, especially the perpendicular velocity gradient, leads the measuring error of flow angle with cylindrical probe to be larger than with conical multi-hole probe.
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