bead appearance
焊缝外观
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The causes for the appearance defects on crown, shoulder and bead areas of BTR tire were analyzed and their countermeasures were proposed.
分析全钢载重子午线轮胎胎冠、胎侧、胎肩和胎圈部位外观明疤的产生原因，并提出解决措施。
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