rear draft lug and body center plate filler
后引水耳和阀体中心板填料
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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