It is easy that the main resonance of a stepped drive shaft is analyzed with the equivalent shaft.

利用当量轴可方便地分析阶梯传动轴的主共振。

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After the yen hit a 15-year high of Y83.57 last week, Mr Kan and his ministers stepped up efforts to talk the currency down to a level more comfortable for the exporters who drive economic growth.

在日元上周触及15年高点1美元兑83.57日元后，菅直人与他的大臣们加大了口头上打压日元的努力，以试图让日元降至让推动经济增长的出口商感觉较为舒服的水平。

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And although they come from a movement that spurns individual leadership, preferring group decision-making, key figures have stepped up to drive the peace process forward.

尽管他们来自一个排斥个体领导，倾向于集体决策的组织，但其关键人物已经在加速推进和平进程。

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Since Mr Monti's government stepped up a drive for increased tax compliance, there have been repeated attacks on branches of the tax-collection agency, some involving rudimentary bombs.

ECONOMIST: Italy��s prime minister

Unfortunately Minichiello will miss the entire season - and the chance to defend her world crown - through injury but Paula Walker has stepped up to drive the GB1 bobsleigh.

BBC: From bobsleighing to Afghanistan

At the other end, Cristiano Ronaldo stepped in from the left wing and unleashed a venomous drive that was clawed behind by Brad Friedel, making his 166th consecutive Premier League appearance to equal David James' record.

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