单词 | Hepplewhite-Gray lamp |
释义 | Hepplewhite-Gray lamp [`hep·ǝl´wīt `grā ´lamp] MINING ENGINEERING A lamp which drew its air from the top down through four tubular pillars into the base, where the air fed the flame through a gauze ring; the outlet was through a metal chimney closed by a gauze disk. |
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