他预测原油移动的速度是100厘米每秒，并且将推荐的管道区域乘以它。
He estimated the oil was moving at 100 centimetres per second, and multiplied this by the proposed area of the pipe.
当它以最高速度运转时，环绕其轨道传播地质子将达到每秒仅比光速低30厘米的速度。
When it is running at full throttle, the protons going round it will be travelling within 30cm a second of the speed of light.
这种身长只有10厘米小型爬行动物，可以在沙子中以最快每秒15厘米的速度游动。
This small reptile, which measures just 10 centimeters long, can swim through the sand dunes at up to 15 centimeters per second.
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