Oil and airlubrication casting tools: the machine manufactured precisely with imported materials, the mold cooling stave fit closely with graphite ring, to ensure oil and air sealing effect.
油气滑铸造工装，采用进口材料精密加工，结晶器冷却壁与石墨环紧密贴合，确保油、气密封效果。
2
The three key technologies should be solved for water being the medium of hydraulic system, which is poor lubrication, strong infiltration leakage, cauterization and air erode.
水作为液压介质必须解决润滑性能差、渗透泄漏性强、腐蚀与气蚀等三大关键技术问题。
3
If have the characteristic, can feel hair that this kind of air compressor oil has lost the proper lubrication performance.