longwall

名词 n.
中文释义

英文释义

名词 n.
  1. A long wall of coal that is mined in a single slice. attributive,often
    — In addition to its work on longwall faces, the A.B. Fifteen has been adapted for shortwall work either as undercutter or as overcutter, particular care having been taken to give it increased manoauvrability by the provision of special pulleys, and increased mobility by the addition of a tilting underframe.

词形变化

longwalls plural

词源

From long + wall.
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