短語(yǔ)詞組短語(yǔ)ballast screening machine [鉄路]道碴篩分機(jī)ballast consolidating machine 夯實(shí)機(jī)械ballast cleaning machine 道牀清掃機(jī);道碴清篩機(jī)械railway ballast cleaning machine 清篩機(jī)ballast recoliecting machine 收碴機(jī)ballast recollecting machine 收碴機(jī)Ballast Bed Machine 壓牀機(jī)small ballast screening machine 小型枕底清篩機(jī)small -sized railway ballast cleaning machine 小型清篩機(jī) 返回 ballast machine