Doubleextension tripods are ideal for a much wider variety of applications, due to their expanded height range, i. e. lower bottom and higher top positions.
双重引伸三脚架为应用更广的品种是理想的,由于他们膨胀的高度范围,即。降低底下和更高的顶面位置。
3
We give a sufficient condition for a finite dimensional symmetric self-dual Lie color algebras to be a doubleextension, thus we solve its classification in the sense of cohomology;