constantlyadv.不断地;经常地
constantadj.不变的;经常的n.常数;恒量
constant potential gradient恒定电位梯度
Constant air volume control定风量控制
constant temperature strata恒温层
constant temperature control恒温控制
constant temperature furnace恒温炉
constant elasticity relation不变弹性关系
constant velocity servomotor恒速伺服电动机
constant molal vapourization恒摩尔汽化