螺

• Metric trapezoidal screw threads - system of diameter and pitch
  直径与螺矩系列
• Connections with waisted stud . tape classification
  腰状杆螺柱连接副型式分类
• Working temperature : - 40 - 80 structure : pc or glass
  Led球泡灯产品简介e27螺口结构。
• Prefabricated gypsum plasterboard ; metal stud partitions
  预制的石膏板.金属螺柱隔板
• Stud , screw and pipe extractors - safety requirements
  螺柱螺钉和管取出器.安全要求
• Realization of slow stud plunge in arc stud welding
  电弧螺柱焊中实现螺柱的低速送进
• Magnetic helicity and its implication in solarphysics
  磁螺度以及在太阳物理上的应用
• Increase back pressure and lower screw rotation speed
  增加背压和降低螺杆转速
• Vertical axis or cycloidal , or vorth - schneider propeller
  垂轴螺桨,摆线螺桨
• The parts and units of jigs and fixtures . screw plug
  机床夹具零件及部件.螺塞