Of course, valuation is not the only factor that drives markets, as became clear during the dotcom bubble.

当然，估值并不是驱动股市的唯一因素，这在网络股泡沫是变得十分清楚。

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For the same water depth and same aperture, the gas flow was the major factor for effecting the bubble size and velocity.

对于相同的水深和相同的孔径，流量是影响气泡大小和速度的主要因素。

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The result shows that the bubble is an important factor influencing coal separation, and the variation of its volume fraction is closely related to the variation of density of ADMFB.

结果表明：气泡是影响分选精度的重要因素，其体积分率的变化与床层密度波动密切相关。

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One factor that predicts bubble peaks, I would suggest, is silly overreach.

FORBES: Silly Top Signs

Another factor fanning the housing bubble was Fannie Mae and Freddie Mac.

FORBES: Magazine Article

In addition to the credit-bubble aftermath that continues to haunt the developed economies (and now China), there is the inflation factor.

FORBES: Markets: Risk Aversion But Not Risks Averted