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banned substances造句
Thereportsaidthatscientistsinterviewedbythecommissionsaidtheirattemptstodeveloptestsforbannedsubstances"werestymiedbylatedecisionsandaseeminglackofwillatthehighestlevelsoftheIOC."Horsesarenotraiseda...
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chemical substances造句
makealkaline,asofchemicalsubstances.testingmethodsforresistanceofadhesivebondstochemicalsubstancesFoodcontainsmanydifferentchemicalsubstancesthatourbodyneeds.disperseinamediumintoacolloidalstate;ofche...
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hazardous substances造句
Avoidhazardoussubstancesandchemicals.Environmentalprotection,nomercuryandotherhazardoussubstances.Yetallofthesehazardoussubstancesposelittleriskifusedproperly.and(c)damagesto"naturalresources"result...