数字是用百分率表示的。

The figure is expressed as a percentage.

《牛津词典》

不透明度测试仪：量度纸张不透明度并以百分率表示的仪器。

Opacimeter: Instrument for measuring the opacity of paper and expressed it as a percentage.

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心胸比率用百分率表示，是心脏最大横径和 胸廓 最大宽径的比率。

The cardio-thoracic ratio, expressed as a percentage, is the ratio between the maximum transverse diameter of the heart and the maximum width of the thorax.

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