For the determination of the permeability of molding (core) sand
通气孔规格 Specifications of the Orifice
大孔 large Orifice------ Ф 1.5mm
小孔 Small Orifice ------Ф 0.5mm
透气率 Permeability-----b 0 – 2450
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检测认证人脉交流通讯录
