id	keyword
american_scientific_journal-4923	stress
american_scientific_journal-4923	pressure
american_scientific_journal-4923	pipe
american_scientific_journal-4923	bar
american_scientific_journal-4923	thickness
american_scientific_journal-4923	power
american_scientific_journal-4923	compressor
american_scientific_journal-4923	design
american_scientific_journal-4923	thickness pipe
american_scientific_journal-4923	flow
american_scientific_journal-4923	pipe design