pierce through point junction arch
pierce through point junction arch
[煤炭科技英汉词典]
pierce through point junction arch穿尖碹岔
曾称“象鼻子碹”。拱高不变的碹岔。
是什么意思，pierce through point junction arch的解释，pierce through point junction arch的翻译
pierce through point junction arch
[煤炭科技英汉词典]
pierce through point junction arch是什么意思，pierce through point junction arch的解释，pierce through point junction arch的翻译