In particular, we have been rotating things about just a point in the plane What you could imagine also is instead you have your solid.
特别地，绕平面上一点旋转物体，同样可以想象，旋转一个实体。
Learning plane geometry well is the foundation of learning solid geometry well.
学好平面几何是学好立体几何的基础。
In the mid-column design of gabled frames, the selected solid web section, isn t satisfied by in-plane stability checking because of the biggish out-plane effective length.
门式刚架的中柱设计中，常因为平面外计算长度较大，所选实腹式截面无法满足平面外稳定验算，从而导致用钢量增加。
应用推荐