The nonlinear equation of the guyed mast is presented based on calculation models of space cable and beam elements.

将桅杆结构离散为空间纤绳单元和梁单元计算模型，建立了桅杆结构非线性平衡方程。

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In the online retail space, there are a number of models that retailers can adopt.

在网上销售领域，有许多零售商可以采用的模型。

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Most of the painstakingly built models, including replicas of Scott's cabin and Amundsen's ice-cave workshop, had been moved to the exhibit space, except for a few stray Emperor penguins.

大部分煞费苦心的构造模型，如斯科特船舱和阿蒙森冰雕工作室的复制品已经被搬到展览大厅中去了，只剩几只灰色的帝王企鹅留在这里。

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This is a big change from earlier models where NASA led and controlled the development of space vehicles.

VOA: special.2010.04.28

And there are plenty of variations on the theme: A version of the Levitron called "Floating Ideas" gives you a base over which you can float a variety of objects, including models of the space shuttle, a VW Beetle and a picture frame.

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She left the car in one fluid motion, not even pausing to push the locking button on her security key, and entered the school and walked urgently down the hall, past the display of photographs of "Astronaut Moms and Dads" grinning in their orange pressure suits as they held up models of the space shuttle.

NPR: In 'Challenger Park,' Mom Is an Astronaut

All models have increased boot space because of the relocation of the charging point and an enhanced interior trim.

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