tetrabasic acid

1. A crystalline tetrabasic acid ( H4P2O6).
   一种晶状的四元酸（HPO）。
2. Synthesis of tetrabasic graft copolymer of chloroprene rubber/ styrene/ methyl methacrylate/ acrylic acid
   氯丁橡胶/苯乙烯/甲基丙烯酸甲酯/丙烯酸接枝共聚物的合成

noun

1. an acid containing four replaceable hydrogen atoms per molecule