The construction and function characteristics of core digitally controllablevariable resistors AD5242 are elucidated.
说明了核心部件数字式电位器AD5242的结构、性能特点；
2
We need to know that energy consumption represents the single largest controllable operating expense for a building, typically a third of variable expenses.
我们应当认识到，能源消耗是建筑物的唯一一项最大的但可控制的营运费用，一般为可变费用的三分之一。
3
In this paper, variable mass controllable mechanical systems are investigated.