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词汇 black band
释义

Definition of black band in English:

black band

noun
historical

  • A dark-coloured clayey stratum of iron ore occurring in the coal measures (especially in Scotland) and containing sufficient carbonaceous matter for smelting; iron ore of this kind; usually attributive, as "black-band ore", etc.

Origin

Early 19th century.

Definition of black band in US English:

black band

noun
historical

  • A dark-coloured clayey stratum of iron ore occurring in the coal measures (especially in Scotland) and containing sufficient carbonaceous matter for smelting; iron ore of this kind; usually attributive, as "black-band ore", etc.

Origin

Early 19th century.
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