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单词 pcb
释义

WordReference Random House Learner's Dictionary of American English © 2024
PCB, n. [countable], pl. PCB's, PCBs. 
  1. Chemistrya highly poisonous compound, formerly used in industry.

WordReference Random House Unabridged Dictionary of American English © 2024
PCB, 
  1. Chemistrya family of highly toxic chemical compounds consisting of two benzene rings in which chlorine takes the place of two or more hydrogen atoms: known to cause skin diseases and suspected of causing birth defects and cancer. Also called polychlorinated biphenyl. 
  • p(oly)c(hlorinated) b(iphenyl)

Collins Concise English Dictionary © HarperCollins Publishers::
PCB abbreviation for
  1. polychlorinated biphenyl
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更新时间：2025/11/8 3:17:40