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单词 trommel
释义 trommel Mining. U.S.|ˈtrɒm(ə)l|
[a. G. trommel drum.]
A rotating cylindrical sieve or buddle used for washing and sizing ores.
1877in Knight Dict. Mech.1886tr. Callon's Lect. Mining xxiii. III. 27 A trommel is a barrel in the form of a cylinder or of a truncated cone, horizontal or slightly inclined.
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更新时间:2024/9/20 6:06:57