[机] basic bismuth gallate, bismuth subgallate

jiǎn xìng méi sì zǐ suān bì ㄐㄧㄢˇ ㄒㄧㄥˋ ㄇㄟˊ ㄙˋ ㄗˇ ㄙㄨㄢ ㄅㄧˋ