gravel ballast

网络释义

1.	卵石道碴台湾工程术语与缩写 - 翻译界-翻译论坛 ... Gauge Tie 轨距拉杆 Gravel Ballast 卵石道碴 Guard Rail 护轨 ... bbs.e5zj.com
2.	砾石道碴 http://www.ptsgi.com/ch... ... "卵石道碴"," Gravel ballast" "卵石道碴,砾石道碴"," Gravel ballast" "吕宋绳"," Manila rope" ... www.guandang.com

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