固

• Effect of scratch on fatigue life of fasten holes
  孔口划痕对紧固孔疲劳寿命的影响
• General technical specifications of electric tamping tool
  电动捣固镐通用技术条件
• Gas - liquid - solid catalytic oxidation desulfurization of diesel
  固催化氧化脱硫研究
• Axial buckling analysis for top - free and bottom - fixed pile
  底部嵌固桩的稳定性分析
• Standard specification for laminated thermosetting materials
  层压热固材料标准规范
• The technology is simple , clean , fast and tight
  连接技术简单，干净，快捷，紧固。
• Research on the new solid - liquid separator for eps
  液固旋流分离器的设计与选用
• The improvement of fixing for donkey head of pumping unit
  抽油机驴头紧固形式的改进
• Tighten the cover using the appropriate sized wrench
  采用尺寸适当的扳手紧固阀盖。
• Install relief valve cover nut and tighten
  安装安全阀阀盖螺母，并加以紧固。