adj. ruòyīnqì( shǐxiánlèqìfāshēngróuhédejīnshǔ、 sùliàoděngfùjiàn) . piece of metal, plastic, etc used to soften the sounds produced from a stringed instrument
adj. ruòyīnqì( gǎibiànguǎnyuèqìyīnzhìyòngdeguǎnkǒusàitóu) .=>illusatApp pad placed in the opening of a wind instrument to change the quality of the sounds produced