- Above result revealed that multidirectional closed die forging of spiral bevel gear was feasible.
揭示了使用复动闭式模锻模具成形小锥角螺旋伞齿轮的可行性。
- The significance of treating spontaneity pneumothorax witheguipment of closed thoracic drainage made by our selves.
自制胸腔闭式引流装置治疗自发性气胸初步探讨。