coal-tar asphalt coal tar pitch
... tar asphalt mixture 柏油沥青 coal-tar asphalt coal tar pitch 煤焦油沥青 asphalt tar 沥青焦油 ...
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coal-tar asphalt coal tar pitch
煤焦油沥青煤焦油沥青
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The performance and usage of coal-tar asphalt were introduced. Meanwhile, it was assumed the excellent characteristics, mechanism and technology of the modified coal tar pitch.
介绍了煤沥青的性能、用途以及有广泛用途的煤焦油改质沥青的优异特性，改质机理和生产工艺；
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