CYJY14-4.8-73HF/B型异相游梁抽油机后配重的改造
CYJY14-4.8-73HF/B형이상유량추유궤후배중적개조
Transformation of the Rear Balance Weight of CYJY14-4.8-73HF/B-type Hetero-beam Oil Extractor
저자의 최근 논문