vortex over tap hole(At the end of tap, formation of a vortex over the tap hole cannot be avoided and causes furnace slag entrainment into the tap stream. 在出钢结束时，出钢口上方不可避免地会形成旋涡，从而引起出钢流裹人炉渣。)
eddy-current sensor(During continuous casting, the precise steel level in the mold is detected with an eddy current sensor. 连铸期间，使用涡流传感器对结晶器钢水面进行精确检测。)
vortex formation in steel(Vortex formation in steel can be reduced by maintaining the highest possible metal bath level over the tap hole. 保持出钢口上方尽可能深的钢水熔池可以减少钢水中旋涡的形成。)
