sunspot active cycle [天] 黑子活动周
solar active cycle 太阳活动周
volcano-active cycle 黄坦旋回
seismic active cycle 地震活动周期
Active Reviewing Cycle 动态回顾循环
one-cycle control active power filter 单周控制有源滤波器
Some statistical relationships between coronal holes and prominence in solar active cycle 21 are analysed.
分析了太阳活动21周冕洞和日珥之间的一些统计关系。
Because the hint is before the loop body, this code leaves your hint active for every iteration of the loop, but it only has to use one cycle.
由于提示位于循环体之前，因此这段代码将使提示对于循环的每次迭代都保持活动状态，不过它只使用了一个周期。
The cycle is repeated: the brain rests, then it becomes active, then dreaming occurs.
该循环重复：大脑休息，然后它变得活跃，然后做梦发生。
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