injector

injector
noun
  1. a person or thing that injects something
    注射者;注射器,注入器
    ■(亦作 fuel injector)(in an internal-combustion engine) the nozzle and valve through which fuel is sprayed into a combustion chamber
    (内燃机)(燃料)喷嘴
    ■(in a steam engine) a system of nozzles that uses steam to inject water into a pressurized boiler
    (蒸汽机)喷射器
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