由机械电子部第二十一研究所上海星龙科技开发公司与上海华东医院联合研制的“牙钻机”于1989年4月8日在上海通过产品技术鉴定。来自北京、常州、无锡及本市代表60余人,与会的口腔医疗专家及机电专家认为该机出力大、效率高、温升低;电源过载能力大,有无级调速、手控、脚控选择、彩色发光管显示、过载保护;车头部分直、弯车头可 The “Dental Drilling Machine” jointly developed by Shanghai Xinglong Technology Development Co., Ltd. and Shanghai Huadong Hospital of 21st Institute of Mechatronics Department passed the product technical appraisal on April 8, 1989 in Shanghai. From Beijing, Changzhou, Wuxi and the city on behalf of more than 60 people, attended the oral medical experts and electrical experts believe that the machine output, high efficiency, low temperature rise; power overload capacity, stepless speed regulation, manual control, foot control Select, color LED display, overload protection; front part straight, curved head can be