| 单词 | planer |
| 释义 | planer [`plān·ǝr] MECHANICAL ENGINEERING A machine for the shaping of long, flat, or flat contoured surfaces by reciprocating the workpiece under a stationary single- point tool or tools. MINING ENGINEERING A fixed-blade device for continuous longwall mining of narrow seams of friable coal; the machine is operated along the coal face, planing a narrow cut from the solid coal as it travels. |
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