这种格架由两块安装在底板上是矩形支撑块组成。
This consists of two rectangular support blocks mounted on a back plate.
最常用的类型是矩形框架由适当地安装在底板上的四块支撑块组成。
The most common type encountered is the rectangular frame constructed of four support blocks suitably mounted on a back plate.
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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