此种器械产生磁场的功率足以在人的大脑细胞里激发出电流而不会使人体有所损害。
The machine's magnetic fields are powerful enough to induce electric currents in human brain cells without being harmful.
该设备通过安放在人体头部的电极发送出一个弱电流。
The device sends a weak electrical current through electrodes placed on a person's head.
如果人体组织和电极之间的有效接触面积保持不变，那么高频电流强度扩大一倍将会使电流密度增大一倍，并产生四倍的热量。
Doubling hf-current results in a doubling of current density and a fourfold heat provided that the area of effective contact between the tissue ang the electrode remains constant.
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