支撑块2起支撑作用，以使热交换板3的面与面之间以一定的间距互相平行。
The supporting blocks 2 have a supporting function, so that the surfaces of the heat exchange plates 3 are parallel mutually in a certain distance.
支撑块2起支撑作用，以使热交换板3的面与面之间以一定的间距互相平行。
The supporting blocks 2 have a supporting function, so that the surfaces of the heat exchange plates 3 are parallel mutually in a certain distance.
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