螺旋式

• Development and application of screw steel spiral recoverable bolt
  螺纹钢螺旋式可回收锚杆研制与应用
• Rl8 do series screw - type fuse
  Rl8 do系列螺旋式熔断器
• Screw type refrigerating compressor
  螺旋式冷冻压缩机
• Screw - type continuous centrifugal
  螺旋式连续离心机
• Classification and application of the screw - type solid liquid separating sets
  螺旋式固液分离设备的分类及应用
• Screwed type steel pipe fittings
  螺旋式钢管配件
• Rl6 series screw - type fuse
  Rl6系列螺旋式熔断器
• Connecting devices and separated entities with screw type clamping units
  备有螺旋式夹紧器的连接器件及分隔设备；
• Connecting devices and seperated entities with screw type clamping units
  备有螺旋式夹紧器的连接器件及分隔设备；
• Continuous coil spiral
  连续盘螺旋式