WHO has been active in the evaluation of health issues raised by exposure to electromagnetic fields (EMF) in the frequency range from 0 to 300 GHz.

世界卫生组织一贯积极评估暴露于频率从0至300赫兹的电磁场(emr) l产生的健康问题。

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AIM to study the effects of change rate of electromagnetic fields (EMF) on blood apparent viscosity and coagulation and find a new physical way to reduce the blood viscosity and restrain coagulation.

目的研究电磁场变化率对血液粘度和凝血过程的影响，探索降低血液粘度，抑制凝血过快、过强的一种物理新方法。

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In 1997 the National Research Council issued a major report on the health effects of exposure to power frequency electromagnetic fields (EMF), such as those due to electric power lines.

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