The team found that parts of the seamount's steep flanks were made of porous volcanic material, leaving them weak and unstable.

研究小组发现，海山陡峭的侧翼局部由多孔的火山物质构成，这正是其脆弱和不稳定的诱因。

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Its low density has led scientists to speculate that it may consist of porous, icy material.

土卫十六密度较低，科学家因此推断它可能由多孔冰物质构成。

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Ultracapacitors also have two metal plates, but they are coated with a sponge-like, porous material known as activated carbon.

超级电容也有两块金属片，但其外面有海绵状的多空材料，即活性炭涂层。

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The Swach's cartridge, a key component of the system, resembles Edison's electric bulb and is made up of a composite of rice-husk ash (a highly porous material derived out of paddy husk) and fine particles of nano-silver, which inhibits bacteria growth.

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"The new material is a liquid-infused elastic porous surface, which is what allows for the fine control over so many adaptive responses above and beyond its ability to repel a wide range of substances, " Prof Aizenberg explained.

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