Double Stars is beautiful twin planets. Seems dazzle precious stones emitting different colors and rays and light.
双子国是一个美丽的双星球，像两枚耀眼宝石在星空上散发异彩光芒。
Laser Diodes (contd.) : In-plane lasers: double heterostructure, quantum well, multi-contact, surface emitting.
平面雷射：双异质结构，量子井，多重电极，面发射。
Laser Diodes (contd.) : In-plane lasers: double heterostructure, quantum well, multi-contact, surface emitting.
平面雷射：双异质结构，量子井，多重电极，面发射。
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