In dusty areas the filter element may be provided with a pre-separator (air intake side) in the shape of a foam mat or a fleece.
在高粉尘地区，滤芯可能采用海绵或无纺 布材料来作为预过滤（在进气端）。
In dusty areas the filter element may be provided with a pre-separator (air intake side) in the shape of a foam mat or a fleece.
在高粉尘地区，滤芯可能采用海绵或无纺 布材料来作为预过滤（在进气端）。
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