短语词组短语subsonic effuser 次音速逸散器variable effuser 可调喷管effuser r 扩散喷管closed effuser 闭合式喷管;闭合泻流器;闭合逸散器ZAR effuser 扩散器effuser detail 扬声器纸盒variable area effuser 可调喷管 返回 effuser