| 单词 | chock |
| 释义 | chock [chäk] MINING ENGINEERING A square pillar for supporting the roof in a mine, constructed of prop timber laid up in alternate cross layers, in log-cabin style, the center being filled with waste. NAVAL ARCHITECTURE 1. An open or closed metal fitting through which ropes, wires, or cables are passed. 2. A block or wedge for supporting a boat that is being repaired. |
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