core tube with holes 开洞核芯筒
Core holes should be drilled as vertical as possible.
取芯井应该尽可能垂直钻探。
The black holes sink to the centre of the cluster, where a core that is completely made of up of black holes forms.
黑洞向星团中心沉降,在这个区域,形成了一个完全由黑洞组成的核心。
In the core, the black holes experience a range of interactions, sometimes forming binary pairs and sometimes being ejected from the cluster completely.
在星团核心,黑洞经历一系列相互作用,有时形成双黑洞,有时被完全抛出星团之外。
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