X-ray binaries
plural of dalla-dalla
One of 88 counties in Ohio, United States. County seat: Mount Gilead. Named after Jeremiah Morrow. / One of 36 counties in Oregon, United States. County seat: Heppner. Named after an early settler.
plural of X-ray binary
(idiomatic) Available for someone to have something just by asking for it, i.e., without any significant effort or outlay; freely.
天文学者たちは、銀河内のX線連星が降着の不安定性により時間とともに明るさを変化させることを観測した。
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DiQt
Free
★★★★★★★★★★
