The results indicate that the mutagenicity of Chinese coals is Simlar to that of the U. S. coals from Ohio which shows very weak mutagenicity.

试验结果表明，原煤样品的致突变力是十分微弱的，与美国，俄亥俄的原煤样品致突变试验结果相类似。

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The results indicate that the mutagenicity of Chinese coals is Simlar to that of the U. S. coals from Ohio which shows very weak mutagenicity.

试验结果表明，原煤样品的致突变力是十分微弱的，与美国，俄亥俄的原煤样品致突变试验结果相类似。

youdao