Like a lighthouse, these beams sweep past the Earth and are registered as pulses separated by 8.7 seconds.
这些扫过地球的射线束使得磁星像灯塔一样，据记录其脉冲间隔为8.7秒。
2
China made a clean sweep of women's podium at the Good Luck Beijing 2008 Marathon race Sunday, with Chen Rong winning the gold in 2 hours, 30 minutes and 42 seconds.
For chronograph functions, the 6 o'clock counter displays hours, the 30-minute counter at 3 o'clock displays minutes and secondssweep by on the central hand.