The low-power timer has an independentclock and is running also in Stop mode if it is clocked by LSE, LSI or anexternal clock.
低功耗定时可以运行在以LSE，LSI或外部时钟驱动的情况下，包括停止模式。
The running cost of generating power from tidal energy is very low.
潮汐能作为一种可再生资源，蕴藏量大，利用潮汐能发电，运行成本低。
The characteristics of arc furnace are low voltage, big current and nonlinear load. Much negative sequence current is produced during running. As a result, the power net is unstable.
电弧炉具有低电压、大电流而且负荷非线性的特点，在其运行过程中产生大量的负序电流，导致电网不稳定。
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