oil-shale retort 油页岩干馏釜
oil shale retort 油页岩干馏炉
oil shale retort wastewater 油页岩干馏污水
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Merrell spent five years "mentally" designing an oil shale "retort, " in which pulverized rock is baked, and vaporized oil extracted.
NPR: Squeezing Oil Out of Stones in the Rocky Mountains
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