constantlyadv.不断地；经常地constantadj.不变的；经常的n.常数；恒量constant volume calorimeter恒容量热计Constant amplitude feedback恒振幅反馈constant temperature cavity恒温腔constant pressure regulator恒压第器constant-bandwidth filter恒定带宽滤波器constant temperature curing恒温熟化constant temperature system恒温系统constant current coulometry恒电流库伦法constant stress type tester恒定应力型试验机constant rate of production稳定产量,常产量