单词	aerogel
释义	aerogel /ˈɛːrədʒɛl / noun A solid material of extremely low density, produced by removing the liquid component from a conventional gel.An aerogel is a porous network of silica strands with diameters of a few nanometres.... To be useful, aerogels must remain firm in different environments - a hurdle that most such materials have not cleared. A tennis racket-shaped canister packed with a material called aerogel will capture the particles during the flyby.
随便看	rep-goer rephase rephrase repick repicture repiece repin repine repinement repiner repique replace replaceable replacement replacement cost replacement cycle replacement fertility replacement level replacement period replacement price replacement ratio replacement theory replacement therapy replacer replacive

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