- pneumatic pumping unit
- 气动: pneumatic
- 气动抽油杆泵: pneumatic sucker-rod pump
- 气动抽油杆运移吊卡: air lift rod tra fer elevator; air lift rod transfer elevator
- 气动平衡抽油机: air-balanced sucker-rod pumping unit; airbalanced suckerrod pumping unitit
- 气动平衡泵杆抽油机: air-balanced sucker-rod pumping unit
下载手机词典可随时随地查词查翻译