...研发成果 Sandia国家实验室正在开发一种新型的、可扩展性、成本效益的生长技术，用于生产低位错密度（low dislocation density）的大块GaN衬底。这项成果将影响LED灯的效率和寿命，当前的相关技术是采用蓝宝石和碳化硅衬底的外延方法，导致了高位错密度。
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Therefore, CdZnTe crystal with low dislocation density can be obtained by employing and adjusting appropriate crucible moving rate during the crystal growth.
因此，通过适当的选择和调节坩埚下降速度是获得高质量晶体的可行技术方案。
In the massive eclogites, the garnets with low dislocation density and with no visible clusters of water molecules are mainly rigid although a few dislocation nets have been observed.
块状榴辉岩中石榴石的位错密度低，没有观察到水分子团，虽然在局部发现有位错网，但总体上仍呈刚性。
EM observations indicate that the dislocation density is very low in the ELO reg ion.
透射电子显微镜的观测表明在ELO范围内位错密度很低。
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