As a method of spanning space, the arch can support greater weight than a horizontal beam.
作为一种跨越空间的方法，拱能够承受比水平梁更大的重量。
The equations of caustic curve and its initial curve for a crack illuminated by an oblique incident light beam in reflection arrangement were deduced using the space analytic geometry method.
本文用空间解析几何方法，推导了在一般非平行斜入射光条件下，裂纹体表面所形成的反射焦散线和初始曲线的方程。
In this paper a space analysis method for built-up system of arch trussed beam has been proposed.
针对拱桁梁组合体系桥梁，本文提出一种空间计算方法。
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