单词	地磁期
释义	地磁期magnetic epoch
随便看	pulse droop pulse drop off time pulse-drop-off time pulse--dropped pulsed ruby laser pulsed sieve plate column pulsed signals pulsed source pulsed transverse field pulse duration pulse-duration pulse duration control pulse duration distortion pulse duration jitter pulse duration modulation pulse-duration modulation pulse duration modulation (pdm) pulse duration modulation{=pdm} pulse duration modulation，pdm pulse duration, pulse width pulse-duration ratio pulse-duration--ratio pulse-duration selector pulse-duration telemetering pulse duration，pulse length，pulse width