研究表明：随着传输管道转角处过渡圆弧半径的增大，所产生的氧化膜与卷气逐渐减少；
The results have shown that the larger of the fillet radius, the fewer of the surface defect and entrapped air.
研究表明：随着传输管道转角处过渡圆弧半径的增大，所产生的氧化膜与卷气逐渐减少；
The results have shown that the larger of the fillet radius, the fewer of the surface defect and entrapped air.
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