CC Com and BV Dra light curves
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Based on O-C curves, we present detailed period investigations of two weak-contact binaries CC Com and BV Dra. It is found that the periods of these two binaries have varied in...
基于O-C曲线（O-C curves），我们对两颗弱接触双星CC Com与BV Dra开展了详尽的周期研究。经研究发现，这两颗双星的轨道周期曾发生……
