Secondary buckling mode of shallow arches depended on the ratio of rise to gyration radius.

对于矢跨比较小的坦拱，矢高与截面回转半径的比值将决定拱的屈曲形式。

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The relationship between frequency and prestress, ratio of rise to span of tensioned cable and membrane structure are also studied.

系统分析了索膜结构自振特性与预应力、矢跨比、索初始应力等的关系。

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In America, where progress has been fastest, the Reinharts reckon that about half the rise in the ratio of credit to GDP accumulated during the boom era has been unwound.

美国的进程是最快的，瑞哈特姐弟认为，繁荣时期积累的信贷对GDP比率的上涨，有大约一半已经被释放了。

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In previous cycles, a rise in the ratio of downgrades to total ratings changes has been a good predictor of rising default rates.

ECONOMIST: Buttonwood

As mentioned above, Troika debt-to-GDP estimates are said to have been raised and Greece, which has committed to bringing its debt down to 120% of GDP by 2020, will see that ratio rise past 180% next year.

FORBES: Greek Protesters Welcome Merkel In Nazi Uniforms As The IMF Downgrades The World

To bring the ratio of prices to rents back to equilibrium, either rents must rise sharply or prices must fall.

ECONOMIST: Global house prices