J2EE has attracted more and more attentions for its flexibility, maintenability and security. J2EE因其可伸缩性、灵活性、易维护性和安全性受到越来越多的关注。
Practice has proven that metal oxide material used as deep well anode ground bed has the merits of maintenability, replaceability and easy installation. 实践证明,金属氧化物材料应用于深井阳极地床,具有可维护、可更换、施工方便的特点。