生产率的年平均增长量是4.5%。
The average yearly increment in productivity was 4.5 per cent.
我们采用灰色预测方法与平均增长量外推法相结合，建立了一种新型的预测模型——灰色组合预测模型。
We use gray dopesting method and averagely ascending quantity outside pushing method, set up a new dopesting model-gray prefab dopesting model.
尤其是1990年以来的十几年间，我国的航空运输量年平均增长量超过15%，是同时期世界平均水平的4倍多。
Especially from 1990 to 2004, the growth rate of total air transportation amount in China was over 15% on average, which was almost 4 times of the world's average growth rate.
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