在以体积中心为原点的机体坐标系中，建立了完整的六自由度非线性模型。

A six degree of freedom (DOF) nonlinear dynamic model of the airship was presented based on the body axes coordinate system with the origin at the center of the volume.

youdao

我要说的是，完全相反，正电荷集中在中心，在一个非常非常小的体积内。

I'm going to say, quite to the contrary, the positive charge is concentrated at the center in a tiny, tiny, tiny volume.

youdao

同时，来自华盛顿大学在极地科学研究中心的研究指出，2010的的海冰体积为20,300立方千米，比1979年以来的最低记录减少了38%。

Meanwhile, research from the polar science centre at the University of Washington suggests that the volume of sea ice in March 2010 was 20, 300 cubic km, 38% below the 1979 level when records began.

youdao

I'm going to say, quite to the contrary, the positive charge is concentrated at the center in a tiny, tiny, tiny volume.

我要说的是，完全相反，正电荷集中在中心,在一个非常非常小的体积内。

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