The results show that due to the strong jet impingement on the narrow face in mold, solid shell near the impingementpoint is very thin.
研究表明，钢液对结晶器窄面的冲击严重，导致在冲击点附近的凝固坯壳较薄。
2
They are crawling through such tight spaces down through the center of the structure, sometimes to the point where there's impingement on their chest where they can only take half a breath.