For large flow pressure drop allows small, should choose small resistance of the plate type, vice choose resistance of plate type.
对流量大允许压降小的情况，应选用阻力小的板型，反之选用阻力大的板型。
In inclined type roof panel: Prevents the remaining cleaning solution to drop on the clean plate small dish.
倾斜式内顶盖：防止残余的洗涤液滴落在干净的盘碟上。
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