單項選擇題

采用托克儀“10x”刀片可檢測以下哪種厚度的涂層:()

A.涂層(>50mils,1270μm)
B.涂層(10-20mils,254-508μm)
C.涂層(<3mils,76.2μm)
D.涂層(20-50mils,508-1270μm)

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