id	keyword
american_scientific_journal-6876	scale
american_scientific_journal-6876	removal
american_scientific_journal-6876	chamber
american_scientific_journal-6876	distance
american_scientific_journal-6876	nozzle
american_scientific_journal-6876	arrangement
american_scientific_journal-6876	paraffin
american_scientific_journal-6876	descaling
american_scientific_journal-6876	pressure
american_scientific_journal-6876	figure
american_scientific_journal-6876	deposit
american_scientific_journal-6876	result
american_scientific_journal-6876	technology
american_scientific_journal-6876	air