Furthermore, it will cost too much labor and money to remove the oxidation -decarbonization-layer.

同时为去除氧化脱碳层还要耗费人力、物力。

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Peeling of oxidation film and oxidation-decarbonization are more serious on the surface than on the sub-surface.

试样表面的氧化腐蚀及氧化皮剥落均比次表层严重，表面的开裂也加速了次表层裂纹的形核和扩展。

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