片语
large grade separation大型立交
grade-separation pavement立交路面
grade e separation junction立体交叉连接
grade-separation disc static mixer立交盘静态混合器
grade-separation culvert立交地涵
high-grade coal separation equipment高档选煤设备
grade-separation-style structure立交桥式构造
Railway Grade-Separation Project铁路立体化工程计划