The fracture of the pump shaft is mainly caused by large size non metallic inclusions and point welding between the lock nut and the pump shaft.
结果表明，大尺寸的非金属夹杂和背帽外缘的点焊是引起泵轴过早断裂的主要原因。
The fracture of the pump shaft is mainly caused by large size non metallic inclusions and point welding between the lock nut and the pump shaft.
结果表明，大尺寸的非金属夹杂和背帽外缘的点焊是引起泵轴过早断裂的主要原因。
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