A区：不良面积在0.5mm2以内，目视不明显，且同一面只能有一处，可接

A区：不良面积在0.5mm2以内，目视不明显，且同一面只能有一处，可接受（AC），反之则拒收（RE）

Results (English) 1:

Area: bad area less than 0.5mm2 and visually inconspicuous, and one can only have one place, acceptance (AC), otherwise reject (RE)

Results (English) 2:

A zone: bad area within 0.5mm2, visually obvious, and with only one side, acceptable (AC), otherwise rejected (RE)

Results (English) 3:

A area: the poor area in 0.5mm2, visual is not obvious, and the same side can only have one place, can accept (AC), and vice versa (RE).