机械拉线定位法
positioning method by pulling line
国界线画法标准
national boundary drawing standard
WLS(无线定位服务)
common conversion point gathering
X线头颅侧位定位片
Cephalometric radiographs
产线定位
orientation of the production line
单相接地选线定位
wire selection and positioning of single-phase earthing
等位线法
Anti MV specific IgM
equipotential line method
equipotential line method ELM