Lasers became an everyday technology when us supermarkets decided to automate their checkouts using barcodes that could be read by a red helium-neonlaser built into the counter.
激光技术第一次走进日常生活，是美国超市使用发出红色氦氖激光的条形码扫描枪实现收款自动化。
2
Mothods: 80 patients (observed group) treated by irradiating acupoints with heliumneonlaser were compared with another 80 patients (control group) by ultrashort wave.
方法：采用氦氖激光照射观察组80例与使用超短波治疗对照组80例进行观察。
3
Objective: To observe the clinical curative effect of intravascular irradiation with helium-neonlaser for treating type2diabetes complicated by acute cerebral infarction.