基本解释n.[化]过铬酸盐同根派生 perchromate相关词英汉例句monium peroxoy-chromate ammonium perchromate 过铬酸铵ammonium peroxoy-chromate ammonium perchromate 过铬酸铵potassium perchromate 过铬酸钾ammonium perchromate 过铬酸铵sodium perchromate 过铬酸钠perchromate更多例句