dragline的用法和样例：
词汇搭配
- dragline loader 拉索装载机(绞盘式)...
- dragline excavator 拉索斗式挖土机,吊铲...
- dragline bucket 拉索戽斗,吊铲抓斗...
- dragline ditch cleaner 绳索式拖斗清沟机...
- dragline stripper 剥离电铲
- dragline cableway excavator 缆索挖土机
- dragline tower excavator 塔式拖铲
- dragline scraper 带式刮土机,索斗挖掘...
- dragline cableway 索斗挖掘用索道...
