您要查找的是不是：
- 改良MGA矫治器Improved mendibular growth advance
- MGA矫治器MGA appliance
- 器utensil
- 管理器manager
- 资源管理器explorer
- 改良improve
- 伺服器server (computer)
- 断路器breaker
- 口腔矫治器与射频联合治疗阻塞性睡眠呼吸暂停的疗效评价Treatment of obstructive sleep apnea using bi-polar radiofrequency and oral appliance
- 感应器inductor
- 清洁器cleaner
- 稳压器manostat
- 读卡器card reader
- 混频器mixer
- 筛选器sizer
- 集线器hub (network)
- 逆变器inverter
- 熔断器fuse
- 换热器heat interchanger
- 调速器speed governor
