一体式后从板
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integral rear draft lug
整体式后引水耳
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The causes to such defects as cracking and sand inclusion in the integral rear draft lug and the body center plate filler are analyzed, and the technology improvement measures are described.
分析了一体式后从板座及上心盘座裂纹、夹砂等缺陷产生的原因，并介绍了工艺改进措施。
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