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单词 coal-tar pitch
释义

coal-tar pitch


coal-tar pitch

n (Elements & Compounds) a residue left by the distillation of coal tar: a mixture of hydrocarbons and finely divided carbon used as a binder for fuel briquettes, road surfaces, and carbon electrodes

coal-tar pitch


coal-tar pitch

[′kōl ¦tär ‚pich] (materials) Dark-brown to black amorphous residue from the redistillation of coal tar; melts at 150°F (66°C); used as a thermoplastic.

coal-tar pitch, tar

A dark brown to black hydrocarbon obtained by the distillation of coke-oven tar; softening point near 150°F (65°C); used in built-up roofing as a waterproofing agent.
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更新时间:2025/2/26 4:42:00