Unverified80% confidenceFactTime unknown
孔隙直径2-5mm的EVA蜂窝孔对矿砂拦截最优；孔径过大（＞8mm）小颗粒会直接漏穿，孔径过小（＜2mm）易堵塞不易落砂
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Unverified双层蜂窝EVA垫的孔径应控制在6-8mm，孔径过大（>10mm）会漏砂无法截留，过小（<4mm）猫砂容易卡孔难清理78% similarUnverified铲孔孔径应为3-5mm用于豆腐砂和膨润土结团砂，孔径过大（＞6mm）会漏掉小颗粒新砂造成浪费，孔径过小（＜3mm）则筛不干净结成小块的排泄物77% similarUnverified膨润土/矿砂选孔径5-8mm的铲子，豆腐砂/水晶砂颗粒大需选孔径8-10mm的宽缝铲，否则漏砂过多浪费或颗粒卡孔76% similarUnverified铲面孔洞采用长条形（缝隙状）比圆孔漏砂更快、抗堵性更好，圆孔在潮湿砂粒下容易被糊住76% similarUnverified投放式除菌块需匹配地漏箅子孔径，块体直径应大于单孔但小于整个箅子内径；常见地漏箅子内径40-50mm，块体过大无法落入、过小会随水冲走75% similar
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