Warning: file_put_contents(/www/wwwroot/ppbbbu/202081.com/cache/2b37daf4e88c847d883155ff3cfae8a0.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/202081.com/index.php on line 55 polyphosphoric例句_polyphosphoric英汉例句_polyphosphoric双解例句_2020年的事情英文词典
Ammonium persulfate and sulfuric acid were used to turn completely the polyphosphoric acid into orthophosphoric radicals, which were then determined by spectrophotometry. 可用過硫酸銨和硫酸將多聚磷酸全部轉化成正磷酸根，再用分光光度法測定其質量分數。