title: [Effect of protection measures for visual fatigue of radar operators in Beijing].
authors.forename: Xia
authors.initials: X
authors.lastname: Li
authors.forename: Bai-Sheng
authors.initials: BS
authors.lastname: Jing
authors.forename: Ai-Hong
authors.initials: AH
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D001248:Asthenopia / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008889:Military Personnel; D011825:Radar; D055815:Young Adult