Constanty康斯坦蒂constantadj.不变的；经常的n.常数；恒量constant diameter cam等径凸轮constant service time固定服务时间Constant phase offset常相位偏移Constant flux control恒流量控制Constant displacement恒位移constant length field字长字段constant force spring恒压弹簧,等拉力弹簧constant volume cycle等容循环constant-level tube定长水准管constant phantom pain持续性幻痛