筛机分轻型筛，重型振动筛。
There are two types of screening machines: heavy-duty and light-duty.
本系列振动筛共有四十种规格，其中重型筛供大粒度物料分级、轻型筛供中小粒度物料分级。
There are 40 specifications for YA series, of which the heavy-duty type is used for the classification of large size materials, while the light-duty type is for the middle and small size materials.
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