A.長0.8mm,寬0.5mm B.長0.08in,寬0.05in C.長0.08mm,寬0.05mm D.長0.8in,寬0.5in
A.0.3mm B.0.8mm C.1.0mm D.1.3mm
A.文字符號 B.實物圖形 C.圖形符號 D.技術(shù)參數(shù)