三(San)道(Dao)幕(Mu):(?)是(Shi)用(Yong)于(Yu)各(Ge)种(Zhong)表(Biao)演(Yan)形(Xing)式(Shi)的(De)独(Du)唱(Chang)、(?)演(Yan)唱(Chang)、(?)独(Du)奏(Zou)等(Deng),(?)在(Zai)各(Ge)种(Zhong)戏(Xi)剧(Ju)、(?)戏(Xi)曲(Qu)的(De)片(Pian)段(Duan)中(Zhong),(?)利(Li)用(Yong)二(?)、(?)三(San)道(Dao)幕(Mu)的(De)启(Qi)、(?)闭(Bi)更(Geng)换(Huan)布(Bu)景(Jing)和(He)道(Dao)具(Ju)。(?)类(Lei)型(Xing)有(You)启(Qi)闭(Bi)式(Shi)、(?)升(Sheng)降(Jiang)式(Shi)、(?)串(Chuan)帘(Lian)式(Shi)、(?)均(Jun)匀(Yun)式(Shi)等(Deng)。(?)