In the last treatment, it was discovered that the problem was caused by loose rotor pole that led to augmented shaft swing and bigger clearance of lower guide bearing.

在最后的一次处理中找出机架振动大的根源就是转子磁极松动，导致大轴的摆度加大，下导间隙变大，从而引致机架振动不断增大。

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Israel's Alex Averbukh won the pole vault title with a clearance of 5.85m.

BBC: Brits cruise into relay finals

Isinbayeva, who failed to defend her world title in Berlin last month, won the pole vault with a first-time clearance of 4.70m to maintain her perfect Golden League record.

BBC: Powell beats Gay in Brussels 100m

ATHENS, Greece -- American pole vaulter Timothy Mack pulled off a last-gasp clearance at an Olympic record height of 5.95 meters to take the title in Athens.

CNN: Mack pulls off a last-gasp victory