pulley block

英 [ˈpʊli blɒk]

美 [ˈpʊli blɑːk]

滑轮组

化学

英英释义

noun

• a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
  Synonym:pulleypulley-blockblock

双语例句