minor semi-axis
... 短轴半径 minor semi-axis 断言集 predicative set 断言集论 predicative set theory ...
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车方机床用曲率半径很大的椭圆短半轴曲线代替直线切削方形工件。
It illustrates a ellipse's short semi-axial curved line with great cured radius, that can replace the straight line for cutting square work-pieces on the machine tool.
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