id	keyword
american_scientific_journal-1918	cleaning
american_scientific_journal-1918	robot
american_scientific_journal-1918	surface
american_scientific_journal-1918	silo
american_scientific_journal-1918	space
american_scientific_journal-1918	climbing
american_scientific_journal-1918	technology
american_scientific_journal-1918	ieee
american_scientific_journal-1918	materials
american_scientific_journal-1918	journal
american_scientific_journal-1918	robotics
american_scientific_journal-1918	cleaning robot
american_scientific_journal-1918	vol
american_scientific_journal-1918	adhesion
american_scientific_journal-1918	inspection
american_scientific_journal-1918	research
american_scientific_journal-1918	engineering
american_scientific_journal-1918	international
american_scientific_journal-1918	air