external breeding ratio 再生区转换比 ; [核] 外增殖比
external conversion ratio 堆外转换比
external debt service ratio 外债偿还率
ratio of external standard 外标道比
external compression ratio 外压缩比
ratio external conversion 外转换比率
What’s so great about the dome is that it does exactly what Bucky wanted; that is, it has the highest ratio of enclosed area to external surface.
圆屋顶额伟大之处在于它封闭区到外部表面的比例最高，那正是巴基想要的效果。
What's so great about the dome is that it does exactly what Bucky wanted; that is, it has the highest ratio of enclosed area to external surface.
圆屋顶额伟大之处在于它封闭区到外部表面的比例最高，那正是巴基想要的效果。
Germany’s gross external debt/GDP fell about 5 percentage points during 2003-2007, while that ratio climbed by about 50% for other advanced economies.
2003至2007年间，德国对外债务总额与GDP的百分比下降了5个百分点，而在别的发达国家，这个比值爬升了约50%。
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