斗式升降机 meaning in English

dump skip
elevator bucket

Bucket elevators - classification of bucket elevators
斗式升降机.第1部分:分类
Bucket elevators - specification for dimensions of deep elevator bucket with flat rear wall
斗式升降机.第3部分:平后壁深斗升降机尺寸规范
Bucket elevators - specification for dimensions of vertical bucket elevators with calibrated round steel link chains
斗式升降机.第2部分:标定圆钢连接链垂直斗式升降机尺寸规范