A.石灰 B.电石 C.石蜡
A.1-1.5 B.1-9 C.10-22 D.25-32
A.82 B.86.7 C.92.3 D.95
A.C B.Si C.P D.S
A.小于10mm B.小于0.5mm C.大于0.5mm
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