船舶磁场
magnetic field of watercrafts
ships magnetic field
vessel’s magnetic field
城市附加磁场
superimposed magnetic field on city
成型磁场分布
orienting field distribution
超声波电磁场
ultrasound and electromagnetic field
超强平行外磁场
superstrong external parallel magnetic field
超强磁场
Super-high magnetic field
super field
超高频电磁场
radio frequency electromagnetic field
超低频脉冲梯度磁场
ultralow frequency pulsed gradient magnetic field
超低频电磁场
extremely low-frequency magnetic fields
超导强磁场
superconducting magnetic field
high static strong magnetic fields