Organizers said Thursday's championships marked a major step forward for sport pole dancing.
组织者们成星期四德冠军赛是竞技钢管舞迈出的一个大步。
Kuo discovered that compasses do not point true north but to the magnetic North Pole. This was a decisive step to make them useful for navigation.
沈括发现，指南针并不是真正的指向北方，而是指向地磁的北极，这对指南针用于导航走出了决定性的一步。
The self-holding of a motor pole and the magnet rotor of the step motor can ensure the stable working situation, which reduces the energy consumption of the valve.
工作状态切换后可以停止通电，电机磁极与步进电机磁 转子自保持可保证工作状态稳定，降低了阀自身的能耗。
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