undercutter

n. 擦伤

词形变化

undercutters 复数 undercutters

释义与例句

n.
  1. 1.

    One who, or that which, undercuts.

  2. 2.

    A type of plough with a V-shaped blade or sweep pulled along under the soil.

  3. 3.

    A type of bit.

    工程
  4. 4.

    A device for excavation, used on railways.

  5. 5.

    A device for cutting into rock walls from below.

    商务 采矿

词源

From undercut + -er.

来源：wiktionary