论文介绍了法国和德国的线型，指出采用三次抛物线线型已成为大号码道岔线型的发展趋势。
The geometry of turnout of France and Germany is described. It is pointed out that cubic parabola has been a development direction of geometry of the big number turnout.
论文介绍了法国和德国的线型，指出采用三次抛物线线型已成为大号码道岔线型的发展趋势。
The geometry of turnout of France and Germany is described. It is pointed out that cubic parabola has been a development direction of geometry of the big number turnout.
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