人cu
人cu
电镀铜锡合金是一种合适的代镍镀层，它不使人体过敏，能满足防扩散性能的要求，且成本较低。
Cu, Zn, Co and Ni are indispensable trace elements in human body, which are all transition elements. They serve as important active sites of enzymes, and have good antibacterial activities.铜、锌、钴、镍是过渡元素，是人体中不可缺少的微量元素，是一些重要酶的活性中心，且均有良好的抑菌活性。
