The spin-down rate has been measured for almost every radio pulsar, and theory indicates that it depends on the strength of the star's magnetic field. 这种自转变慢的速率,几乎每一颗无线电波霎都量得到,而理论指出,此速率和星体的磁场强度有关。
The number of permanent magnets is two or more than two, the two poles of each magnet are arranged staggeringly to produce the alternate magnetic field. 本发明的保健牙刷克服了现有磁癖牙刷中的磁场强度不够,疗效不明显及刷毛的倒毛现象等缺点。