spacer ['speɪsə]

例句:

• It consists of a transparent dielectric spacer.
  它由一个透明的电介质隔片构成的.
  
• Washer or spacer with adjustable inside and outside diameters.
  内径和外径都可调整的垫圈或垫片.
  
• Spacer ring provides bearing surface and prevents deformation of the gasket.
  隔离环提供支撑面,防止垫圈的变形.
  
• The addition of a spacer device increases the medication delivered to the lungs.
  来自BBC
• Spacers - because it can be hard to coordinate your breathing with an inhaler, you may be prescribed a spacer.
  来自BBC
• Using a 'spacer' makes it easier to inhale the drug, and so helps reduce the risks of steroids being absorbed into your body.
  来自BBC