Wotè an jeneral nan baryè son an se 3 wotè, divize an de pati.Pati siperyè a se yon baryè ki absòbe son 1 mèt-wotè.Pati mitan yo ak pi ba yo adopte baryè son plak asye koulè 1.-mèt-wo.
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Tan poste: Dec-12-2019