Early Thickness Trends. Thus, we have seen pavement structures decrease from about 0.9 m (3 feet) for Roman designs to 350 to 450 mm for Telford designs, to about 250 mm for Macadam designs, to 100 mm at about the turn of the century (refer to Figure 4).
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Exemple 3 : les ordinateurs personnels. Dans les années 1980, un ordinateur servait essentiellement au traitement de texte et au calcul avec un tableur.
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