... radial thrust bearing径向止推滚动轴承 spiral casing蜗形壳 archimedes' spiral阿基米德螺旋线 ...
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泵壳多做成蜗壳形，故又称蜗壳。
Pump volute - shaped shell made many, it is also called the volute.
蜗壳的每一节，在下料时需要绘制展开图，采用数解法进行展开，即常用的坐标法或三角形法。
When the material is prepared, each pipe is required to draw its developed map by using mathematics analysis, that is, common coordinate method and triangular method.
泵壳多做成蜗壳形，故又称蜗壳。
Pump Volute-shaped shell made many, it is also called the volute.
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