closed point

• 密闭

closed point的用法和样例：

例句

1. With the bass plugs mounted in the bass reflex ports, the cabinet is closed and the loudspeaker operates as a closed construction.
   将低音插头接入低音反射端口，可以将音箱设置为密闭式音箱，使其像密闭式音箱一样工作。