In the upper portion of the sandwich with hydrocyclone guide blade and packing filter layer.
在内夹层的上部设有旋流导向叶片及填料过滤层。
The structure is four - pillar guide, up - packing, doublecylinder and machine balancing system. ensures the parallelism of upper and lower working sides.
结构为四柱导向，上压式，双油缸加机械平衡系统，保证了上下工作台之间的平行度。
The upper set of wrench flats belong to the packing nut, which is threaded into the valve body.
扳手面上面的那个属于衬垫螺母，它是通过螺纹旋进阀体的。
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