ballast pit

　
英 　 　 美 　 　
  • 碎石料坑,采石場(chǎng)

ballast pit的用法和樣例：

例句

  1. The practice indicated that evident benefits were obtainedwhen the forestry cableway was applied to the stone pit operations in specially difficult topographies.
    實(shí)踐表明在特殊困難地形將林業(yè)索道用于采石場(chǎng)作業(yè)有明顯效益。
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