再由共振条件确定出管道的极限冲刷长度。
The limiting erosion length can be determined by the resonance condition.
而平台区由于设计管径仅为潮汐通道区的三分之一，其极限冲刷长度远小于潮汐通道区。
Because the pipeline diameter in platform is one third of that in tidal channel, so the limit scour length is less.
对矿用新型立轴冲击破碎机在极限条件下处于高速冲刷磨损时耐磨衬板的耐磨损问题进行了探讨。
The paper deals with the subject of wear-resistant of sheathing board using on new-type mining vertical-shaft crusher which is used at the critical conditions of high speed scouring abrasion.
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