1、
2、
Removing process of light and soft impurity and low density is introduced.
介绍了煤中低密度轻软杂质清除的工艺过程.
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3、
Low-density core makes it have the advantage of light mass and small heat conduction coefficient.
低密度 泡沫芯使它保留重量轻、导热系数小等优点,高密度表皮使泡沫体具有良好的强度与硬度.
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