下面给出三维空间中通量的定义。

Let me give you a definition of flux in 3d.

篓子的三维空间、形状和走向也非常依赖于数据。

The dimensions, shape and orientation of the basket also depend very much on the data.

本文讨论了三维空间中到两定直线的距离之比为常数的点的轨迹。

This paper discusses the loci of moving points with constant ratios of distances from two fixed lines.

给出我们生活的这个世界的三维空间，庞加莱猜想能够告诉我们我们的宇宙的形状。

Given that we live in a world with three spatial dimensions, the poincare conjecture tells us ultimately what shape our universe could be.

利用保角变换，首先在二维平面得到双曲线型的等位线簇方程，然后过渡到三维空间，从而得到表面为单叶双曲面（两实半轴相等）的带电导体的等位面簇方程。

Transition to the three-dimensional space, then we obtain the equation of equipotential surface families of charged conductor with surface of hyperboloid of one sheet.