| 单词 | mast |
| 释义 | mast [mast] ENGINEERING 1. A vertical metal pole serving as an antenna or antenna support. 2. A slender vertical pole which must be held in position by guy lines. 3. A drill, derrick, or tripod mounted on a drill unit, which can be raised to operating position by mechanical means. 4. A single pole, used as a drill derrick, supported in its upright or operating position by guys. MECHANICAL ENGINEERING A support member on certain industrial trucks, such as a forklift, that provides guideways for the vertical movement of the carriage. NAVAL ARCHITECTURE A long wooden or metal pole or spar, usually vertical, on the deck or keel of a ship, to support other spars which in turn support or are attached to sails, as well as derricks. |
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