pulley block_单词pulley block_pulley block的解释和用法

pulley block

pulley block基本解释

滑轮组

pulley block同义词

pulley block相关例句

用作名词(n.)

Crevasse rescue is one of the more complicated mountaineering techniques, sometimes requiring pulley systems and multiple haul lines.
裂缝救援是一项更副复杂一些的登山技术，有时候需要滑轮组和多组拖曳绳。

pulley block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