carbons造句
ModifiedactivecarbonsfornitrogenoxidepurificationatlowtemperatureOfthese,heptanewith7carbonscausesundesirableengineknocking,sorefinerstrytoblendinmoresmooth-burningoctanewith8carbons.Residualsareroom-...
ModifiedactivecarbonsfornitrogenoxidepurificationatlowtemperatureOfthese,heptanewith7carbonscausesundesirableengineknocking,sorefinerstrytoblendinmoresmooth-burningoctanewith8carbons.Residualsareroom-...