Surface electroosmosis method can reduce coal tangential resistance but the pole distribution affects the result of reducing resistance.

表面电渗法可有效地减少煤的切向阻力，但电极分布对电渗效果有很大影响。

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Surface electroosmosis method can reduce coal tangent ial resistance but the pole distribution affects the result of reducing resistance.

表面电渗法可有效地减少煤的切向阻力，但电极分布对电渗效果有很大影响。

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This time, Cassini's instrument had the chance to "smell" that oxygen, as it flew through it over Rhea's north pole, just 97 kilometres above the surface, according to the details given on Space.com.

根据SPACE.com网的报道，这一次，“卡西尼”号探测器在土卫五北极表面97千米高的上空中漫游时有机会一“嗅”其的氧气。

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When scientists used the spacecraft's antennae to analyse radar echoes from the lunar surface, they found that within certain deep canyons near the south pole the echoes increased and were altered in just the way they would be if dirty icerather than rock were filling the caverns.

ECONOMIST: Divining water

Scientists may not be able to explain the "boiler" at the south pole but they are already talking up the possibility that conditions there could allow for liquid water below the surface - with all the implications that might have.

BBC: NEWS | Science/Nature | Saturn moon delights and baffles

The surface of this snow-white moon is riven with cracks - dubbed tiger stripes - at its south pole.

BBC: Enceladus has 'spreading surface'