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单词
fly block
释义
WordReference Random House Unabridged Dictionary of American English © 2024
fly
′
block′,
[
Mach., Naut.
]
Mechanical Engineering, Naval Terms
(in a Spanish burton or the like) a block, supported by a runner, through which the hauling part of the fall is rove.
Mechanical Engineering, Naval Terms
any block that shifts with the movement of its tackle.
1835–45
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更新时间:2025/9/21 1:11:33