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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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