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- And it's based on the sunspot cycle theory that the Mayans put together, and we are definitely in a sunspot cycle... 根据玛雅人编纂的太阳黑子周期理论，我们肯定是在一个太阳黑子周期中...
- The next sunspot cycle will be between 30 percent to 50 percent more intense than the last one, scientists said Monday. 据美联社3月6日报道，美国科学家6日表示，下一个太阳活动周期与上一个太阳活动周期相比，其强度将增加30%25至50%25。
- Right now the sun is in the most dormant phase (so-called solar minimum) of its 11-year sunspot cycle. 在11年的太阳黑子周期中，当前的太阳正处于休眠最深的状态（太阳活动最小期）。
- The subsurface meridional flow plays an important role in the dynamics of the sunspot cycle. 次表面的子午流在黑子周期上扮演了重要的角色。
- The variation of the subsurface meridional flow plays an important dynamical role in the sunspot cycle. 这种次表面的子午流随黑子周期的变化，显示子午流在黑子周期中扮演重要的角色。
- Accurately predicting the intensity of the sunspot cycle, which occurs about every 11 years, allows scientists to anticipate solar storms. 太阳黑子的活动是周期性的，其平均周期约为11年。
- For example, the sunspot cycle and the allied magnetic-polarity cycle have been linked to periodicities discerned in records of such variables as rainfall, temperature, and winds. 例如： 人们已经把太阳黑子周期及相关的磁极性周期和从雨量、温度、风等变量的纪录中分辨出的周期联系了起来。
- Radio engineers already had a fairly good understanding of how the sunspot cycle affected lower frequency transmissions, especially at frequencies below 30 MHz. 无线电工程师已经有相当好理解对怎样黑点周期影响了更低的频率传输,特别是以频率在30兆赫以下。
- But they are not ruling out a host of other possible factors, including methane, carbon dioxide, the number of meteors seeding the upper atmosphere, and even the 11-year sunspot cycle. 但它们并未排除其它可能的因素，包括甲烷、二氧化碳、大气层外缘的流星雨、甚至周期为11年的太阳黑子活动等。“我认为科学家们仍然在研究这个现象”，托马斯说，“我们仍在为搞清楚这些云的成因及其变化而努力”。
- The sunspot cycle,is a recurring 11-year period over which the number of sunspots fluctuates and corresponds to the number of sun flares. 太阳黑子发生的周期为11年。在其周期内，太阳黑子发生的次数有波动，它与太阳闪烁次数一致。
- The sunspot cycle, is a recurring 11-year period over which the number of sunspots fluctuates and corresponds to the number of sun flares. 太阳黑子发生的周期为11年。在其周期内，太阳黑子发生的次数有波动，它与太阳闪烁次数一致。
- Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow, as seen in the rings visible in the cross sections of their trunks. 倒装，地球上，对日斑循环最准确的指示就是树木的生长，如在其年轮上显示的。
- Geomagnetic activity indicates large amplitude for sunspot cycle 24 太阳黑子周期24的地磁活动显示的大振幅
- The darkest region of a sunspot. 太阳黑子中的最黑暗的区域
- The pedal of a cycle is attached to a crank. 自行车的踏板与曲柄相连。
- It's easier to cycle with the wind behind you. 顺风骑车省力。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- The seasons of the year make a cycle. 一年四季构成一个循环。
- The business cycle experienced a sudden down. 商业周期经历了突然的萧条。
- This is the cycle of economic booms and slumps. 这是经济繁荣和经济萧条的周期变化。
