| 摘要 |
In a method for treating material that is disposed in an electrostatic field pattern to be acted upon by the electrostatic field pattern, the improvement of repetitively changing the electrostatic field pattern from a substantially uniform electrostatic field pattern to a substantially non-uniform electrostatic field pattern and then back to the substantially uniform electrostatic field pattern while the field pattern is acting on the material disposed therein, the material being a wet web-like fibrous material, a fluid, etc.
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