Revolving sieve; trommel
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A rotating cylindrical sieve used to separate ore, coal, etc. The cylindrical surface is made of perforated iron plate or wire mesh, and it rotates on a central axis. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
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鉱石，石炭などを分ける，回転式の円筒ふるい。円筒面を多孔鉄板や金網でつくり，中軸によって回転する。
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