quadrupling

Progressively increasing the amplitude leads to the bouncing period doubling then quadrupling.

假如逐渐增大振幅,水滴跳动的频率将会加倍,继而再变成四倍.

Quadrupling the gross national product will be an achievement of great significance.

翻两番的意义很大.

That is the double significance of quadrupling our industrial and agricultural output.

翻两番包含这两个方面的含义.

Boeing predicts China will need 3,400 new passenger jets over the next 20 years, quadrupling the total fleet to 4,460 by 2026 on the back of annual domestic growth in traffic of nearly 9 per cent.

波音预测，由于国内航空客运量的年增幅接近9%，中国未来20年将需要3400架新客机，使得中国的客机总数到2026年提高3倍，达到4460架。

It is entirely possible to achieve the goal of quadrupling the gross annual value of industrial and agricultural production by the end of the century.

在本世纪末实现工农业总产值增四倍的目标是完全可能的.

And on this basis, in 2002, China set a new long-term economic growth target of quadrupling her GDP in 20 years.

在这一基础上，2002年，中国又提出了在20年里使GDP再翻两番的新的长期经济增长目标。