I C S13.340.99A94中华人民共和国公共安全行业标准G A68 2019电镀铜包钢代替G A68 2008警用防刺服P o l i c e s t a b-r e s i s t a n t a r m o r2019-02-22发布2019-04-01实施前言本标准的全部技术内容为强制性㊂本标准按照G B/T1.1 2009给出的规则起草㊂本标准代替G A68 2008‘警用防刺服“
Enhancement of photo-and electro-luminescence of GaN-based LED structure grown on a nanometer-scaled patterned sapphire substrateHyoungwon Park a ,Kyeong-Jae Byeon a ,Jong-Jin Jang b ,Okhyun Nam b ,He