The present invention relates to chemical and environment protection technology, and is especially gradient magnetic field process and apparatus for raising content of oxygen dissolved in water.
本发明公开了属于化工环保技术领域的一种通过梯度磁场提高水中溶解氧含量的方法及装置。
2
The positioning apparatus also includes a lifting device for raising and lowering the outer cylinder. The lifting device includes a threaded drive mechanism coupled to the piston.