This paper analyzes the reasons leading to rolled stock jamming in duo cone type piercing mill on piercing mill adjustment and tool shape etc. and puts forward corresponding preventive measures.

从穿孔机调整、工具形状等方面分析了二辊锥型穿孔机产生轧卡的原因，并提出了相应的预防措施。

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Instead of the fail whale Thursday, some people who tried to log onto Twitter's website saw what looked to be a cartoon duo of an inch worm and a soft-serve ice-cream cone.

WSJ: Twitter Blames Data-Center Failures for Outage