In addition Natural and synthetic crystal can be identified by characteristics of inclusion distribution of color twin crystal and so on . However the accurate identification of rock crystals which the interior is clear is a hard problem in gemstone industry .

此外，天然与合成水晶一般可通过包裹体特征、颜色分布、 双晶等方面来鉴定，而内部纯净的 水晶如何准确鉴定一直是宝石界的一大难题。

Research on the Mechanism of the Twin Boundary Motion of Ni-Mn-Ga Single Crystals and the Simulation of Stress-induced Martensitic Transformation

单晶Ni-Mn-Ga 孪晶界迁动机制研究及应力诱发马氏体相变模拟

The high-manganese steel surface nanometer mechanism has the relation to the high density dislocation tangle the high density dislocation response and reorganization and the multiple twin crystals cut mutually as well as the interactivity of the twin crystals and the dislocation .

高锰钢表面纳米化机制与高密度的位错缠结和高密度的位错反应和重组，多重 孪晶的相互交割作用以及孪晶和位错的交互作用有关。