But once the vessel is in motion the additional drag results in only a 3-5% reduction in speed, says Mr Ray.
但是雷说,船一旦开动起来,其附加阻力造成的减速仅在3 - 5%。
The disadvantage of leading-edge slats is that the air acceleration in the slot requires energy (it creates additional drag).
板条不利的领先优势是,在槽中的空气加速需要能量(它创造更多的阻力)。
You can add additional hints and drag sources dynamically to the form using JavaScript.
您可以添加额外的线索,并动态地拖放源。
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