Using symmetry, a self-calibration approach is proposed.

利用对称性，提出了一种自校正方法。

youdao

Using symmetry-adapted force-constant lattice-dynamical method, the Raman active phonon frequencies are calculated for BC3 single-wall nanotubes with diameter between 0.

本文对单壁BC3纳米管的振动模式进行了对称性分析，利用对称性适配力常数模型计算了直径在0。

youdao

Results shows that all these three methods can be used to measure the shear strength of explosion cladding interface, and the most practical one is the double-notch method using symmetry specimen.

最后分别对3种方法进行了测试试验。结果表明，3种试验方法均能有效测试爆炸复合接头的剪切强度，其中对称试件双切口拉伸法最适合实际应用。

youdao

One obvious way to do this is with nuclear weapons, a method that has the pleasing symmetry of using one potential catastrophe to avert another.

ECONOMIST: Green.view: The threat from outer space | The