二羟基的

介绍二元酚项目中保温方案的选择；保温工程的施工与验收；保温效果的测试与评价。具有推广意义。

dihydric alcohol

calcium dihydric pyrophosphate

ammonium dihydric phosphate

dihydric phosphate

dihydric acid

dihydric acid【化学】

dihydric phenol

dihydric acid