stoneblower

名词 n.
中文释义

英文释义

名词 n.
  1. A machine that automatically lifts and packs the sleepers of a railway with small-grade ballast, which is blown under the sleepers to level the track.
    — NR also plans to display a stoneblower from its track treatment fleet at the show. [...] They are known as stoneblowers because they use compressed air to 'blow' extra stones under the sleepers where required, to correct the level of the track.

词形变化

stoneblowers plural

词源

From stone + blower.
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