The IMF reckons that Japan would need to tighten its structural deficit by 13.4% of GDP between now and 2020 in order to bring its debt-to-GDP ratio down to 80% by 2030.

国际货币基金(IMF)推算日本如果要在2030年之前把债务占GDP比降到80%，就必须从现在到2020年之间将其结构性的赤字降低GDP的13.4%。

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The subsequent experiments on a piezoelectric beam show that the structural modal damping ratio can be promoted significantly.

压电悬臂梁的实验表明，它们能使结构模态阻尼比大幅提高。

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The objective digital film image quality assessment based on peak signal to noise ratio, together with structural similarity and human vision system is proposed.

提出了以峰值信噪比为基础，结合结构相似度和基于人眼视觉系统的数字电影图像质量客观评价方法。

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