The length of the arrow shows the approximate speed in a direction perpendicular to the line of sight.

图中的箭头长度近似的表示在垂直于我们的视线的面上，这三个星系团的速度。

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With the condition of the basic hypothesis, the approximate calculation formula was worked out on the gas folwing speed in the tubular centrifugal ventilator.

在基本假设的条件下，导出了筒形离心式通风机筒壳内气体流动速度的近似计算公式。

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Because of the simpler theory structure and faster reconstruction speed, approximate cone beam reconstruction algorithms have become more and more popular in commercial applications.

近似锥束重建算法理论结构简单，重建速度快，易于实际应用。

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Think of it this way: if we took one-thousandth of a second of footage from the femto camera video output and slowed it down to the speed of 30 seconds per frame -- the approximate speed of a standard TV broadcast -- it would take us a lifetime to watch.

CNN: A camera that can see around corners