拉倒吧。你什么时候听说过地磁辐射?

ELF magnetic field exposures result from proximity to electric power transmission lines, household wiring and electric appliances, and are in addition to the exposure that results from the Earth's magnetic field. Magnetic fields are measured in units of microtesla; the Earth's static magnetic field varies from 25 microtesla at the equator to 65 microtesla at the poles.

请您先登陆,再发跟帖!