认为使用沥青工种存在着肺癌死亡率增高趋势。
本研究应用星点设计效应面优化法对SEBS改性沥青工艺进行优化。
This research applies central composite design and response surface methodology to optimize the process parameters of SEBS modified asphalt.
根据国内浸渍剂沥青的生产和使用情况，提出了加快浸渍剂沥青工业化生产的建议。
In accordance with the domestic production and application cases for pitch as impregnating agent, Suggestions for speeding up the commercial production of pitch as impregnating agent are given.
框架采用矩形结构钢材，质量轻强度大，适合长距离、寒冷地区公路安全运输沥青工作。
The frame USES steels of rectangular structure and is strong yet light in weight. It is suitable for long-distance safe transport of asphalt by road in cold areas.
详细介绍了石蜡基原油性质，对利用石蜡基原油研制10号建筑沥青工艺进行了深入研究。
It has introduced the property of paraffin-base crude and deeply researched technology of the construction asphalt number 10 that was prepared by paraffin-base crude.
并同国内外典型改质沥青工艺特点进行了比较，认为ACRE改质沥青工艺具有重要实用价值。
Through the comparison among typical modified pitch production processes and features both at home and abroad, the value and position of ACRE's modified pitch process have been established.
对吉林碳素厂1990名从事沥青作业人员中恶性肿瘤死亡情况及该厂1590名不接触沥青工人死亡情况进行调查。
The study has been done on the mortality of malignant tu-mor in the 1990 workers exposed to pitch and the mortality ofthe 1590 workers w(?)o did not exposed to pitch.
对吉林碳素厂1990名从事沥青作业人员中恶性肿瘤死亡情况及该厂1590名不接触沥青工人死亡情况进行调查。
The study has been done on the mortality of malignant tu-mor in the 1990 workers exposed to pitch and the mortality ofthe 1590 workers w(?)o did not exposed to pitch.
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