视力
Vision
Visual
acuity
eyesight
Sight
eye
eyed
Identification
Visually
poor
Test
asthenopia
optometer
view
visual acuity
seeing
visibility
acuity
vision photopic
Visual acuit
Delamination of lower crust
visible spectrum
Time threshold
vision acuity
光学阅读机
optical reader
optical scanner
optical scanner， bar-code
Bar-code
光阅读机
optical reader
optical reading equipment
纸带阅读机
paper tape reader
paper reading machine
paper-tape reader
paper tape reader(PR)(PTR
paper prototype