A、r=r1 B、r>rl C、r<r1 D、r≤rl
A、r大于R B、可任意选定 C、r小于R D、r小于或等于R
A、r=r1 B、r>r1 C、r1 D、r≤r1
A、r=r1 B、r>;r1 C、r<;r1
A、键槽 B、磨削 C、套筒 D、所有轴肩处 E、螺纹
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