单词	回波谐振器
释义	回波谐振器 echo-resonator
随便看	an official document An official document or charter an official eight-day visit an official eleven-day visit an official entrenched in office an official five-day visit an official function/reception an official holiday An official journal an official language an official letter an officiallooking manila envelope an official nine-day visit an official or legal cancellation an official par of exchange an official price an official proclamation an official recognition of merit an official representative an official request an official residence an official seven-day visit an official six-day visit an official sponsor an official statement