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pulley block的英文翻譯是什么意思，詞典釋義與在線(xiàn)翻譯：
英英釋義
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
pulley block的用法和樣例：
例句
用作名詞 (n.)
- Crevasse rescue is one of the more complicated mountaineering techniques, sometimes requiring pulley systems and multiple haul lines.
裂縫救援是一項更副復雜一些的登山技術(shù)，有時(shí)候需要滑輪組和多組拖曳繩。
