Русско-английский научно-технический словарь
хотя
см. тж. несмотря на то, что; хотя и
• Although this series is endless, the total can only be half as great as ...
• Useful though the two minerals are, there is evidence that they may cause cancer.
• As numerous as are the inorganic bromides that have found industrial use, the organic bromides have even wider application.