The unequal depths of falling and rising branches of the colour curves can be explained by the gas stream from the M-type supergiant component.
文中，我们用M型子星的气流来解释色指数曲线的下降段和上升段深度不等的现象。
The unequal depths of falling and rising branches of the colour curves can be explained by the gas stream from the M-type supergiant component.
文中，我们用M型子星的气流来解释色指数曲线的下降段和上升段深度不等的现象。
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