With a noninteracting pair, astronomers can precisely measure the change in the orbital period of the stars as they spiral toward each other.
但是对于相互间不发生交互的双星系统，当它们旋转着接近对方时，天文学家就可以精确地测量出其公转周期的改变量。
With a noninteracting pair, astronomers can precisely measure the change in the orbital period of the stars as they spiral toward each other.
但是对于相互间不发生交互的双星系统，当它们旋转着接近对方时，天文学家就可以精确地测量出其公转周期的改变量。
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