最普遍的是板框式过滤机，有可填充的、金属隔片的和凹显空间滤饼的。
The most common, the plate-and-frame press, contains caulked , metal septa and a recessed cake space.
全金属孔板叠层换热器是由铜制孔板和不锈钢隔片相间叠置，采用扩散焊工艺焊接而成。
The complete metallic perforated plate heat exchanger is made of a lot of perforated copper plates alternated with stainless steel spacers, and piled up and welded each other.
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