ciment ielts processus de production
IELTS Diagram: Model Answer Band Score 9 - IELTS LizFeb 25, 2015 . While the process of making cement uses a number of tools, the production of concrete requires only a concrete mixer. In the first stage of.ciment ielts processus de production,Ielts: cement and concrete production graph - EssayForumNov 26, 2013 . The diagram below shows the stages and equipment used in the cement-making process, and how cement is used to produce concrete for.