perforated casing well是什么意思

用法例句

Stainless steel filter tube porous materials were prepared by slurry casting using gas-atomized powders of austenitic stainless steel 316L.

以气雾化奥氏体316L不锈钢粉末为原料,采用粉浆浇注法制备不锈钢过滤管多孔材料,分析了烧结工艺对烧结坯过滤性能的影响,对烧结后材料的开孔隙率、孔径及透气度进行了研究。