Constantan.康斯坦察(罗马尼亚东南之一海港)constantadj.不变的；经常的n.常数；恒量constant level oiler恒定油位器,恒定液位加油器constantly interrupt不时地打断constant stress test恒定应力试验constant strain test恒定应变试验constant level chart等高面图constant SOC control恒SOC控制constant supervision持续监督constant generations连续几代constant circulation定向循环constant maintenance经常养护