巷道断面尺寸主要取决于巷道的用途。
结果表明，扩径率是影响制品横断面尺寸精度的一个主要因素。
Based on the results, expanding-ratio is important to dimensional precision of finished products.
矫直辊压下量和重轨弯曲度的减少，可以降低矫直对重轨断面尺寸的影响。
The decrease in reduction and camber of rail could reduce the straightening effect on the cross section dimensions of rail.
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