螺

• Dismantling tool for general - purpose wire thread insert
  普通型钢丝螺套拆卸工具
• Double boiled abalone , conch & maw w yam & lycium chinense
  鲍鱼螺头淮杞炖花胶
• Introduction of ksc small compact screw compressors
  研发试产ksc小型螺杆式空压机
• A new definition for side gapstudy on the twin - screws geometry
  双螺杆几何学的研究
• Shank punching tool for general - purpose wire thread insert
  普通型钢丝螺套冲柄工具
• Progress in the research of helicobacter pylori urease
  幽门螺杆菌尿素酶的研究进展
• Progress in investigation of helicobacter pylori
  幽门螺杆菌治疗性疫苗研究进展
• Studs with hexagon and thread for fine mechanics
  精密机械用带螺纹的六角头螺柱
• Installing tool for general - purpose wire thread insert
  普通型钢丝螺套安装工具
• Helicobacter pylori and portal hypertensive gastropathy
  幽门螺杆菌与门脉高压性胃病