阅读的知觉广度

perceptual span of crane length of span span of jaw clearance of span span of foil sag of the span width of span span of perception consistence of reading psychology of reading ratio of rise to span perceptual span reading span perceptual span test disturbance of perceptual integration perceptual stage of cognition index of perceptual constancy of perceptual knowledge Gestalt laws of perceptual organization narrowing of conscious span span of slab