Time labels the vertical axis of the above plot, and frequency marks the horizontal axis.
上图中,垂直轴表示时间,水平轴表示频率。
If the rover were not moving, the frequency distortions of its signals to Earth would reveal the rate of wobbling in Mars's axis.
如果探测器与火星保持静止,那么它向地球发出的信号将会产生频率畸变。由此,我们可以推算出火星轴线的扰动率。
Rationally define the work gear pump speed, gear and the axis of rotation to avoid engaging resonance frequency, can prevent noise intensified.
合理确定齿轮泵的工作转速,使齿轮与轴的转动避开啮合共振频率,可以防止噪声加剧。
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