他们设计的装置看起来像一个按比例放大的声学斗篷：一些环绕在被保护物体周围的同心圆。
Their proposed device would look like a scaled-up acoustic cloak: concentric circles of posts surrounding a hidden object.
割圆连比例曾是清代无穷级数研究中所用的主要方法，但对它的研究目前还不够充分。
Cyclotomic continued proportion was the principal method for studies on infinite series in the Qing Dynasty, which we still have to go into a step further.
割圆连比例不可能为清代级数论提供坚实的基础。
The cyclotomic continued proportion is impossible to furnish Qing-times series with a solid basis.
确定了非圆齿轮的基本参数：基础圆半径、偏心率、变形距和中心距比例系数。
The basic parameters of non-circular gear are determined, such as primary circle, eccentricity ratio, eccentricity throw and proportional coefficient of center distance.
从年初到 现在，已有 价值约为两万亿美圆的交易被揭开了面纱，使其有希望以多达60%或者更高的比例来打破于2006年创下的交易记录。
Some $2 trillion of deals have been unveiled so far this year, putting it on track to smash the record set in 2006 by a whopping 60% or more.
实验结果表明，在光条圆弧特征数据所占整圆比例偏小的条件下，半径约束最小二乘圆拟合方法可以有效地提高圆中心定位精度。
Influence of the noise in sample data the on the locating of circle centre is analyzed in detail, and simulated experiments are implemented. Results of exper…
实验结果表明，在光条圆弧特征数据所占整圆比例偏小的条件下，半径约束最小二乘圆拟合方法可以有效地提高圆中心定位精度。
Influence of the noise in sample data the on the locating of circle centre is analyzed in detail, and simulated experiments are implemented. Results of exper…
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