Their initial calculations and scale-model wind-tunnel experiments convinced them they wouldn't need a strong wind to lift the 33.5-tonne column.
他们最初的计算和风洞比例模型实验使他们确信,不需要强风就能提起33.5吨的柱子。
2
The gas-lift pumping plant is the power source, the gas volume has a direct effect on the scale of gas lift and the selection of power motor will directly affect the cost of gas-lift system.