Further, the nucleus is assumed to be the seat of the essential part of the mass of the atom, and to have linear dimensions exceedingly small compared with the linear dimensions of the whole atom.

进一步的，核被认为是，原子主要质量所在的地方，和整个原子线性尺度相比，核具有很好的线性尺度。

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Some movements involving primarily vertical or horizontal motions of the body as a whole, in which rotations can be ignored, can be studied using simple equations of linear motion in three dimensions.

有些运动主要涉及整体的垂直或水平运动，其中转动可以忽略，可以用三维线性运动的简单方程来研究。

youdao

Loop shape in fabric are analysed in this paper and the equation about law between remnant curvature and yarn linear density, yarn mechanical properties and knitting elements dimensions is set up.

分析了织物中线圈的形态，推导出了线圈残余曲率与纱线细度、纱线机械性能及成圈机件尺寸之间的关系式。

youdao

Further, the nucleus is assumed to be the seat of the essential part of the mass of the atom, and to have linear dimensions exceedingly small compared with the linear dimensions of the whole atom."

进一步的，核被认为是,原子主要质量所在的地方，和整个原子线性尺度相比,核具有很好的线性尺度“

麻省理工公开课 - 固态化学导论课程节选