Several over-rolling avoided buffer devices about frictional mine hoist are analysed and compared.

通过对一起过卷事故的定量分析，论证缓冲装置在提升系统中的重要作用。

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There are trees everywhere, and panoramic views of the fog rolling in over the bay from our rooftop.

这里到处都是树木，从窗口可以看到雾气从我们的屋顶蒸腾到海湾。

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And the huge amount of Japanese debt rolling over this year need not be a problem.

今年日本必须要重新发行的巨额公债不一定会是问题。

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We recently analyzed the returns of a hypothetical global portfolio as well as a hypothetical US-only portfolio ( 1) over rolling 3-year periods between January 1, 1999 and December 31, 2011, with each rolling period resetting monthly (see graph below).

FORBES: Why Global Diversification Still Makes Sense

Failure to reach agreement on the seven-year budget would mean the EU rolling over annual budgets - a method that would be more expensive and would complicate long-term projects.

BBC: EU budget: Leaders edge towards compromise deal

The regulations, backed by Blues owner Roman Abramovich, demand that teams in European competitions break even over a rolling three-year period from 2012-13.

BBC: Arsenal boss Arsene Wenger questions Chelsea spending