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正(zheng)三(san)(san)通(tong)(tong)溜(liu)子型號編制說明： D—電(dian)動(dong)(dong)推桿 S—手動(dong)(dong) Dy—電(dian)液動(dong)(dong)推桿 Q—氣(qi)動(dong)(dong)推桿 Fc—分(fen)料閥 a—分(fen)料角度 Ⅰ—側三(san)(san)通(tong)(tong) Ⅱ—正(zheng)三(san)(san)通(tong)(tong) Ⅲ—四通(tong)(tong)（二進二出(chu)） Ⅳ—四通(tong)(tong)（一進三(san)(san)出(chu)）
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