... double shell 双层外壳 double shielding 双层保 double shrouded impeller type sand-pump 闭式叶轮泥浆泵 ...
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Results The shielding efficacy was 95% by the lead glass and plumbic suit double protection, the X ray radiation was reduced markedly.
结果经铅玻璃防护屏和铅防护服进行双重防护后，其屏蔽效率达到95%，可显著减少X射线的辐射量；
The influence of double percolation phenomenon on shielding effectiveness of rubber was investigated.
结合二次渗滤现象，分析了其对屏蔽性能的影响。
Extruder: it has adopted the famous brand speed-regulating systems, shielding double-pole mixed PP-R specialized screw and the cylinder which has channels in it.
挤出机：采用品牌调速系统，屏障型两极混炼pp - R专用螺杆，开槽机筒。
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