单项选择题
目前空气静压直线导轨的直线度可达()
A.0.1~0.2µm/250mm
B.1~2µm/250mm
C.0.1~0.2µm/500mm
D.1~2µm/500mm
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单项选择题
A.0.1~0.2µm/250mm
B.1~2µm/250mm
C.0.1~0.2µm/500mm
D.1~2µm/500mm
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