7Zhao J H,Tang L.An evaluation of comfort of a bus seat[J].Applied Ergonomics,1994,25(6):386-392.
8Lee KS,Waiker AM,Wu L.Physical stress evaluation of microscope work using objective and subjective methods[J].International Journal of Industrial Ergonomics,1988,2(2):203-209.
9Kroemer KHE,Kroemer HB,Kroemer-Elbert KE.Ergonomics-How to Design for Ease and Efficiency[M].New Jersey:Prentice Hall,2000.406-415.