idle pulley

Từ điển Oxford Learners Wordfinder Dictionary

noun

a pulley on a shaft that presses against a guide belt to guide or tighten it
• Syn:
idler pulley, idle wheel
• Hypernyms:
pulley, pulley-block, pulley block, block

• Từ đồng nghĩa / Synonyms:
  idler pulley, idle wheel