| 单词 | spud |
| 释义 | spud [spǝd] DESIGN ENGINEERING 1. A diamond-point drill bit. 2. An offset type of fishing tool used to clear a space around tools stuck in a borehole. 3. Any of various spade- or chisel-shaped tools or mechanical devices. 4. See <<grouser>> MINING ENGINEERING A nail, resembling a horseshoe nail, with a hole in the head, driven into mine timbering or into a wooden plug inserted in the rock to mark a surveying station. NAVAL ARCHITECTURE A foot piece to provide support for the legs of the A frame of a floating dipper dredge. |
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