许多矿井都设有大型风扇，运转起来，就好像你站在的大风口处，此外，在墙上覆盖一层石灰石也能降低煤渣效应带来的危害。
Massive fans at many mines make it feel like you are standing in a wind tunnel. Coating the walls with limestone also can dampen the effects of coal dust.
当砂浆含有石灰石粉时，由于石灰石粉具有填充效应，能有效地改善砂浆的孔结构，降低其孔隙率。
When the sand grout contains limestone powder, the limestone powder can improve the pore structure and decrease the porosity of the sand grout because of its filling effect.
结果表明，石灰氮对硝化作用有明显的抑制效应，并能抑制脲酶活性，延缓尿素水解。
The results showed that the effect of lime-nitrogen on the inhibition of nitrification is obvious, and it inhibited urease activity and decreased the hydrolytic rate of urea.
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