单项选择题
常规铸体薄片切样规格为()或φ25mm x5mm 有代表性的岩片。
A.25mm x25mm x5mm
B.φ15mm x5mm
C.φ35mm x5mm
D.25mm x25mm x15mm
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单项选择题
A.25mm x25mm x5mm
B.φ15mm x5mm
C.φ35mm x5mm
D.25mm x25mm x15mm
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