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- the thermal stress has remained virtually unchanged compared with the figures determined during the previous study; - according to the hettinger system, the heart rates should be classified as "stark beanspruchend" (very strenuous) for the furnace keeper and for "beanspruchend" (strenuous) for the deputy keeper and slagger.
— que la contrainte thermique n'a pratiquement pas varié par rapport aux valeurs trouvées dans l'étude antérieure.