将流动注射技术与半封闭电极相结合，研究了硫酸根离子、氯离子和柠檬酸根离子对铁／硫酸体系阳极溶解过程的影响．在恒电位极化过程中，向......

In this article,under quite weaker conditions,theorems of Helly’s type for(not necessarily finite)family of partially c......