“give-and-take lines”的概念、定义、翻译、参考文献-科学参考

单词	give-and-take lines
释义	give-and-take lines [¦giv ǝn `tāk ´līnz] ^MATHEMATICS Straight lines which are used to approximate the boundary of an irregular, curvilinear figure for the purpose of approximating its area; they are placed so that small portions excluded from the area under consideration are balanced by other small portions outside the boundary.
随便看	center of falls center of figure center of flotation center of force center of geodesic curvature center of gravity center of inertia center of inversion center of lift center of mass center-of-mass coordinate system center-of-momentum coordinate system center of normal curvature center of oscillation center of percussion center of perspective center of pressure center-of-pressure coefficient center of principal curvature center of rises center of similitude center of spherical curvature center of suspension center of symmetry center of thrust

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