回流

• Electric traction ; wires for earthing and return current
  电力牵引.接地线和回流线
• Double check detector assembly backflow preventor
  双重检验检测器组合防回流装置
• Optimization thermal profile of solder in smt
  微电子封装领域焊膏回流曲线的优化研究
• Flexible cables for overhead equipment and return current
  架空线设备和回流的柔性电缆
• Clear how to measuring reflow and wave profile
  清楚怎样测量回流焊和波峰焊温度曲线。
• Air braking systems ; shuttle valve with backflow
  气压制动系统.回流循环阀
• Use check valves to prevent reverse flow in to the cylinder
  使用止回阀，防止回流入钢瓶。
• The entire automatic wave ridge welds , the backflow welding machine
  全自动波峰焊回流焊机
• Do not inhale the vapor during reflow
  不要吸入回流焊时喷出的蒸气。
• Double check valve backflow - prevention assembly
  双止回阀防回流组件