| 摘要 |
PCT No. PCT/NO93/00179 Sec. 371 Date Jul. 19, 1995 Sec. 102(e) Date Jul. 19, 1995 PCT Filed Nov. 30, 1993 PCT Pub. No. WO94/12290 PCT Pub. Date Jun. 9, 1994A rotor for mechanical air classifiers of the type having a hollow cage-like rotor is provided with a plurality of entering openings for air and classified material, the entering openings being generally equidimensionally shaped.
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