50kg/m及以下钢轨,辙叉心轮缘槽纵向水平裂纹一侧裂纹长度超过()时,及时更换及焊修。
50kg/m及以下钢轨，辙叉心宽40mm断面处，辙叉心垂直磨耗到发线超过()时达到轻伤标准。
This place is so crowded What shall we do about it？
A. I suggest we should evacuate the theatre as quickly as possible to avoid a trample
B. I advise you not to enter the theatre in order to avoid a trample
C. I’d like to give a tip that you may leave here quickly to avoid a trample
D. I made a suggestion that we cancel the performance immediately to avoid a trample
50kg/m及以下钢轨，辙叉心宽40mm断面处，辙叉心垂直磨耗其他站线超过()时达到轻伤标准。
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