厚度为 0.4 至几十毫米的圆形或方形玻璃板，带有细玻璃管（毛细管），通常以面阵阵列排列。每个毛细管孔的直径可为几微米到几百微米。这些板具有出色的线性度和高精度，同时提供可选择的方向性，使其适用于流量控制和颗粒分选。
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