Diagenesis data indicate that the Silurian asphaltic sandstones are the products of multiple fillings of hydrocarbon.
志留系沥青砂岩的成岩作用特征等资料证明，沥青砂岩的形成是烃类多期次注入的结果。
Depending on the characteristics of the residual oil and the length of the blowing time, asphaltic materials of varying characteristics are produced.
根据渣油性质和吹空气时间长短的不同，可生产出性质不同的沥青材料。
Install, repair or replace single-ply roofing system using waterproof sheet materials such as modified plastics, elastomeric or other asphaltic compositions.
使用防水片材，如改性塑料，橡胶或其他沥青成分安装，维修或更换单层屋面系统。
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