... 重叠面 faying surface; overlaying surfaces 叠面之间的 interfacial 立体重叠面 stereoscopically covered surface ...
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overlaying surfaces
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以上为机器翻译结果，长、整句建议使用 人工翻译 。
Both sealed surfaces of the seat and disc are overlaying welded with Fe base stainless steel welding rod so as to improve wear resistance and erosion resistance.
阀座、阀瓣密封面均由铁基铬镍不锈钢焊条堆焊而成，提高了耐磨性和抗冲蚀性。
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