螺线管聚焦磁场
solenoidal focusing field
摄像管偏转聚焦线圈
deflecting focusing coil for camera tube
微聚焦X射线管
micofocus X-ray tube
micro focusing X-ray tube
Microfocus X-ray tube
X80电阻焊管线管
X80 grade electric resistance welding linepipe
X光激光线聚焦等离子体
focus-line plasma of X-Ray laser
摆线聚焦质谱仪
trochoidal focusing mass spectrometer
地下管线管理
underground pipeline management
Management of Underground Pipelines
地下管线管理系统
underground pipeline management system
钩形集极晶体管管线
hook collector transistor