The first say that the earth is the sphere of people, and therefore found seismic sources of earth 's internal structure or block the movement.

第一个说出地球是圆球体的人，并因此发现地震源于地球内部构造或板块之间的运动。

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The results show that the improvement of the slant improved oil-well pump 's internal structure and the optimization of the materials are the main factors to improve pump efficiency.

研究结果表明改进型斜井泵的内部结构的改进和材质的优选是泵效提高的主要因素。

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Today, the space station?s exterior structure is as long as an American football field and it has about the same internal living space as a Boeing 747 jumbo jet.

今天空间站的外面结构长度约有一个美式足球场一般长，而内部的生活空间约像一架波音七四七珍宝客机般大。

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ETA's internal structure remains a mystery, all the more so as frequent arrests by the Spanish and French police have forced it continually to reorganise its leadership.

ECONOMIST: Reasons for caution over ETA's ceasefire declaration

This information should give scientists fresh insight into the internal structure of Earth's satellite.

BBC: Nasa reveals new information about moon probes crash sites