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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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