mercuric selenite硒酸: selenic acid汞: mercury亚硒酸: monohydrate selenium dioxide; seleninic acid; selenious acid; selenite; selenous acid苯亚硒酸: benzene seleninic acid甲基亚硒酸: methane-seleninic acid; methyl-seleninic acid下载手机词典可随时随地查词查翻译