English translation: grade, grading, grading range
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French to English translations [PRO] Tech/Engineering / desert road building
French term or phrase:fuseau
In a document relating to materials used in desert road building: 5. Ce sont des matériaux possédant une ossature insuffisante avec des courbes granulométriques sortant partiellement ou totalement du fuseau et une résistance à la compression simple insuffisante.
The expression "fuseau de référence" also occurs in similar contexts.