本文研究了煤焦油瓷漆逸散物（CTEV）的致突变性。
The mutagenicity of Coal Tar Enamel Volatiles (CTEV)was studied.
本文正是为了解决这些问题而进一步开展了对煤焦油瓷漆的研究。
To solve these problems, this article studies the performance of coal-tar enamel.
试验数据证明，煤焦油瓷漆是一种可满足现代环保要求并广泛应用于油气水管道的防腐材料。
It is proved that coal tar enamel is protection material which can meet the requirements of modern environmental protection, and continues to be widely used in oil, gas and water pipeline.
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