The experiment on the modified clay's ability of holding back floating-dispersing oil in the water has been studied.

进行改性粘土截留水中浮上分散态油的土柱实验研究。

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As the result of evaporation loss, oil will be less in quantity and lower in quality, and the dispersing oil vapor will result in air pollution and potential fire hazard.

油品蒸发损耗不仅造成油品数量的减少、质量的下降，散失到大气中的油蒸汽造成了空气污染，而且还形成了潜在的火灾危险。

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The oil appeared to be dispersing.

油看上去正在扩散。

《柯林斯英汉双解大词典》

Winds and tides proved more effective at dispersing the oil than official efforts had been at preventing it from spilling.

ECONOMIST: Bush sworn in

The Royal Navy were rallied and they led the bombing runs dropping 62, 000lbs of bombs, 5, 200 gallons of petrol, 11 high-powered rockets and an undisclosed amount of napalm on the wreck and the surrounding waters, sinking the ship, but not really dispersing the oil.

BBC: Torrey Canyon seabed returns to normal after oil spill

They're making plans now for -- even as they drill these two relief wells that optimistically will take quite some time -- how do we plug this leak either through using the robotics to effect the valve -- how are we dispersing this so that that oil never gets to the top and then through a natural system gets -- largely dissipates at the bottom?

WHITEHOUSE: Aboard Air Force One En Route Andrews Air Force Base