asphaltum造句怎么写

This paper introduces construction technique and method of asphaltum concrete surface in a construction section of Reruan road in Songbei district of Harbin city.

Summarize performances and characteristics of different formulations of three kinds of lubricant-solvate asphaltum, semiliquid and high.

Main mines in Albania include petroleum, asphaltum, chrome, copper, nickel, iron, coal and so on.

Summarize performances and characteristics of different formulations of three kinds of lubricant-solvate asphaltum, semiliquid and high. Viscidity oil which are being developed at present.