... 叶轮端面叶片：impeller face vane 叶轮端面区：impeller face area 叶轮端面：impeller face ...
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叶轮端面叶片
Impeller end face blade
以上为机器翻译结果，长、整句建议使用 人工翻译 。
发现主泵工作叶轮的叶片端面与盖板连接处的焊接区域有缺陷。
The defects at the welding areas of blades of working impellers of primary pump connecting the cover plate have been found during pre-service inspection of Unit 1 at JNPC.
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