Under high pressure and intense heat, graphite, the most stable form of pure carbon, changes into the substance commonly referred to as diamond and remaining this way whether or not the heat and pressure are removed.
remaining this way whether or not
remaining like that even as
remaining as such whether or not
remains in this way although
remains thus even when
①//Thus// is the most economical way to say /this way/, /like that/, /as such/, /or in this way/.
②/In this way/ is unnecessarily wordy; /although/ indicates that the heat and pressure are always or definitely removed, but this makes little sense in relation to the rest of the sentence.
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