The results indicated that the coals in study area formed in a tide flat environment, as a result of seawater influence, the content of sulfur in coals is rather high.

结果表明，该区形成于以潮坪为主的过渡相环境，由于沉积过程中受海水影响，煤中硫的质量分数总体偏高；

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One early discovery: It's cheaper and easier to pump in the seawater during high tide.

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