concentric plug
常见例句
- The Vifa XT25TG30-04 1" Dual Concentric Dome Tweeter features a patented dual concentric diaphragm and a unique wave guide center plug which provides an excellent on and off axis response."
該威發xt25tg30 - 04 1 “雙同心圓頂音單元的特點獲得專利的雙同心膈肌和獨特的波導中心堵塞，其中提供了一個很好的上落軸的廻應。 返回 concentric plug