?????：????? ??? ????? ???? ?? ? ????? ??? ????? ??? ????? ??? ?? ??????? ???? ?? ?????. ?? ????? ????? ???? ???? ??????? ???? ????? ????? ?? ???? ????? ???? ?? ???.
????? ??? ???????? ? ????? ??? ????? ??? ????? ??? ?? ??????? ???? ?? ?????. ?? ????? ????? ???? ???? ??????? ???? ????? ????? ?? ???? ????? ???? ?? ???.
????? ???? ??? ????? ???? ?? ? ????? ???:
1. ????? ???? ?? ???? ??? ??? ???? ?????? ??????? ?? ???. ?????? ????? ????? ???? ???. ?? ????? ????? ??? ???? ??????? ???? ??? ?????? ??? ?????? ?? ????? ?? ????? ???? ?? ??????? ???. ?? ????? ????? ?? ? ???? ???????? ?? ?? ??? ???? ??? ???? ???? ???? ?? ???? ?? ????? ??? ??????? ???.
2. ????? ??? ???? ?? ????? ???? ??? ???? ? ???? ??? ?? ???? ????? ???. ????? ?? ???? ?????? ?????? ??? ???? ????? ???? ???? ???? ?? ??? ???? ??????.
From the above text, we can draw the conclusion that: first, the fine crusher is an improved model of the ????????; secondly, the fine crusher discharge is finer than the ???????? and is suitable for sand making. Third, the fine crusher feed size is less than the counter-break feed size.
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