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单词 θ206222
释义
society > travel > travel by water > vessel, ship, or boat > equipment of vessel > tackle or purchase > [noun] > system of) pulley(s) > for raising or lowering sails (5)
ram-head1514

Nautical. A halyard block, a tie block. Cf. ram's head, n. 3. Now historical.

ram's head1627

Nautical. = ram-head, n. 1a. Also ramshead block.

jewel block1769

A block suspended on a pendant (pendant, n. 4) at the end of a spar, used to alter the direction of a line, rather than for mechanical advantage; esp.

sister block1794

a tackle block having two sheaves (sheave, n.1 2a), usually one above the other.

sister1834

Nautical. Any of various items of tackle having two or more matching components. In quot. 1834 short for sister block n. at compounds 4. Obsolete.

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更新时间:2024/12/24 7:36:45