Days earlier, an undersea volcano had torn open the rock of the ocean bottom, 425 feet below the surface.
几天前，海面下的一座火山把水面下425英尺深处的洋底岩石撕裂开来。
Fractured surface scanning observation showed that the breakage in specimen resulted from the corrosion tunnels generating along slip planes and being torn by tensile stress.
断口扫描观察表明，试样破断是由于腐蚀隧洞沿滑移面生长并受到拉伸撕裂所致。
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