exhaust valve

• Double opening exhaust valves
  双口排气球
• Evc exhaust valve closing
  排气门关闭
• Evo exhaust valve opening
  排气门开启
• Intake exhaust valves
  进气和排气阀
• Ec exhaust valve closes
  排气门关闭
• Intake and exhaust valve
  进排气门
• Exhaust valve lifter
  排气门挺杆
• Closed exhaust valve
  密闭排气阀
• Exhaust valve timing
  排气门定时
• Something about measurement and grinding techniques for exhaust valve in 6uec 60la type marine diesel engine
  船用柴油机排气阀的测量研磨技术