road asphalt

基本解釋

The domestic production of road asphalt has been increased rather fast in recent years.
我國(guó)的道路瀝青生産近年來(lái)發(fā)展較快，但在數(shù)量特別是質(zhì)量方麪還不能滿足需要。
Two methods for forecasting the quality of road asphalt with the data of crude assay are proposed.
提出兩種方法，在溶劑脫瀝青過(guò)程之前用原油評(píng)價(jià)數(shù)據(jù)預(yù)測(cè)道路瀝青質(zhì)量。
Production technologies for high grade road asphalt from residues of middle Saudi Arab and Kuwait crudes were developed by Qilu Company, China Petroleum and Chemical Corporation and FRIPP.
中國(guó)石油化工股份有限公司齊魯分公司與撫順石油化工研究院郃作，以沙特中質(zhì)和科威特原油的渣油爲(wèi)原料，開(kāi)發(fā)了制取高等級(jí)道路瀝青的工藝技術(shù)。

One such material is asphalt, a substance often placed on top of buildings and used to cover road surfaces.