碎冰机 ice crusher 道岔附带曲线 curve following turnout branch line 我不知道铁路工程施工轨下基础 underrail foundation;sub-rail foundation;sub-rail track bed ..
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The paper introduces the concept of curve following turnout branch line, the confirmation of head and end, the chord offset calculation of points, the measuring steps in the field.
文章介绍了道岔附带曲线的概念及头尾的确定，各各点支距的计算和现场测设步骤，并确定了拨道整正方法。
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