pumping unit
短语词组
- pumping -unit motor 抽油机电机
- beam double -well pumping-unit 游梁式双井抽油机
- beam -pumping unit 游梁式抽油机
- order -pumping unit 游梁式抽油机
- conventional beam -pumping unit 常规游梁式抽油机
- folding beam -pumping unit 折梁式抽油机
- rod beam -pumping unit 杆式抽油机
- new type beam -pumping unit 异形游梁式抽油机 返回 pumping unit