By taking a few steps to get from a rounded sphere to a flat map, Narukawa managed to maintain the correct area ratios of land and water.

明川用了几个步骤把一个圆球变成了一幅平面地图，并设法维持正确的水陆面积比。

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On the assumption that there was a small solid sphere in the focusing area, the scattering field of concave sphere ultrasonic transducer was analyzed.

以凹球面超声换能器为研究对象，假设聚焦区存在一刚性球形微粒，对此时的散射场进行分析。

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This refers to the belief of various theorists who propagate that the earth is a hollow sphere and has an internal su ce area.

这指的是谁宣扬地球是一个中空的球体，并有一个内部表面积各种理论家的信念。

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If the M23 then struck a deal involving special privileges, Rwanda would acquire, through its unofficial alliance with the M23, a wider sphere of influence in an area rich in minerals.

ECONOMIST: Rebel allies of Rwanda are making rapid inroads