packing seal
短语词组
- packing box seal 填料函密封
- lumped packing -seal 集装式填料密封
- Packing oil seal 迫紧油封
- STEM PACKING or SEAL 填料或密封
- packing g seal 密封垫
- packing shaft seal 填料轴封
- packing water seal 水封
- HYDRAULIC PACKING & SEAL 国别
- double -stage packing element seal 双级胶芯密封 返回 packing seal