In making steel there's essentially no difference between the polyethylene plastic in shopping bags... and a natural resource like coal.

在生产钢铁中所使用的碳几乎和那些购物袋里的聚乙烯塑料没有差别…和煤一样是一种自然资源。

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Through the comparison of seismic wave attenuation and plastic strain, except for geometrical attenuation, the plastic deformation of coal and rocks is also contributing to energy consumption.

通过地震波的衰减规律与塑性应变变化的比较可见，能量的消耗除了几何扩展衰减外，煤岩体的塑性变形方面也起了一定的作用。

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The diameter of sand, content of plastic clastic and development of coal measures play a role in decreasing pore and development of protogenic pore between grains during diagenetic compaction.

砂岩粒径、塑性岩屑含量和煤系发育程度影响成岩压实减孔量，从而影响剩余原生粒间孔隙发育程度。

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The only plastic objects that can not now be recycled are heavily contaminated items, such as paint pots and plastic products, such as carrier bags, coal sacks, and clear material used to seal food containers.

BBC: Guernsey States introduces more plastic recycling