从升C降低到本位C定音鼓
descendre du do dièse au do naturel
语音音质评价
assessment of speech quality
专线语音音质业务
private line voice quality service
X线头颅侧位定位片
Cephalometric radiographs
车载定位定向导航系统
vehicle-mounted navigation system for location and orientation
纯方位定位
Bearing-only location
bearing only location
bearings-only location
bearing-only locating
bearing-only positioning
bearings-only localization